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A cross is a geometrical figure consisting of two intersecting lines or bars, usually perpendicular to each other. The lines usually run vertically and horizontally. A cross of oblique lines, in the shape of the Latin letter X, is also termed a saltire in heraldic terminology.
The word cross is recorded in 10th-century Old English as cros, exclusively for the instrument of Christ's crucifixion, replacing the native Old English word rood. The word's history is complicated, it appears to have entered English from Old Irish, possibly via Old Norse, ultimately from the Latin crux (or its accusative crucem and its genitive crucis), "stake, cross". The English verb to cross arises from the noun c. 1200, first in the sense "to make the sign of the cross"; the generic meaning "to intersect" develops in the 15th century. The Latin word was, however, influenced by popular etymology by a native Germanic word reconstructed as*krukjo (English crook, Old English crycce, Old Norse krokr, Old High German krucka). This word, by conflation with Latin crux, gave rise to Old French crocier (modern French crosse), the term for a shepherd's crook, adopted in English as crosier.
Latin crux referred to the gibbet where criminals were executed, a stake or pole, but not necessarily to intersecting or "cruciform" beams. The Latin word derived from the verb crucio "to torture" (c.f. English excruciate). Latin crux originally referred to the tree or stake on which criminals were crucified in the pre-imperial period. This was later specified as crux acuta or crux simplex. The method of execution may have been adopted from the Phoenicians. The addition of a transverse bar, to which the criminal would be fastened with nails or cords, dates to a later period. The Latin name of the diagonal cross is crux decussata (as it were "ten-like cross", after the Roman numeral); the heraldic term saltire (meaning "stirrup") is introduced only towards the end of the medieval period.
The Greek equivalent of Latin crux "stake, gibbet" is σταυρός stauros "stake, pole". The letter Tau (T) was associated with the stauros or crux, while the notion of "cruciform" shapes, i.e. intersecting lines, were associated with the letter Chi (X). The Greek term for "crossing" ("intersection") was χίασμα chiasma, from a verb χιάζω chiázō "to shape like the letter Chi". Latin had the comparable decussatus "shaped like the numeral ten" (c.f. English decussate).
Due to the simplicity of the design (two intersecting lines), cross-shaped incisions make their appearance from deep prehistory; as petroglyphs in European cult caves, dating back to the beginning of the Upper Paleolithic, and throughout prehistory to the Iron Age. Also of prehistoric age are numerous variants of the simple cross mark, including the crux gammata with curving or angular lines, and the Egyptian crux ansata with a loop.
Speculation has associated the cross symbol - even in the prehistoric period - with astronomical or cosmological symbology involving "four elements" (Chevalier, 1997) or the cardinal points, or the unity of a vertical axis mundi or celestial pole with the horizontal world (Koch, 1955). Speculation of this kind became especially popular in the mid- to late-19th century in the context of comparative mythology seeking to tie Christian mythology to ancient cosmological myths. Influential works in this vein included G. de Mortillet (1866), L. Müller (1865), W. W. Blake (1888), Ansault (1891), etc.
The cross sign occurs trivially in tally marks, and develops into a number symbol independently in the Roman numerals (X "ten"), the Chinese rod numerals (十 "ten") and the Brahmi numerals ("four", whence the numeral 4).
In the Phoenician alphabet and derived scripts, the cross symbol represented the phoneme /t/, i.e. the letter taw, which is the historical predecessor of Latin T. The letter name taw means "mark", presumably continuing the Egyptian hieroglyph "two crossed sticks" (Gardiner Z9).
The shape of the cross (crux, stauros "stake, gibbet"), as represented by the letter T, came to be used as a "seal" or symbol of Early Christianity by the 2nd century. Clement of Alexandria in the early 3rd century calls it τὸ κυριακὸν σημεῖον ("the Lord's sign") he repeats the idea, current as early as the Epistle of Barnabas, that the number 318 (in Greek numerals, ΤΙΗ) in Genesis 14:14 was a foreshadowing (a "type") of the cross (the letter Tau) and of Jesus (the letters Iota Eta). Clement's contemporary Tertullian rejects the accusation that Christians are crucis religiosi (i.e. "adorers of the gibbet"), and returns the accusation by likening the worship of pagan idols to the worship of poles or stakes. In his book De Corona, written in 204, Tertullian tells how it was already a tradition for Christians to trace repeatedly on their foreheads the sign of the cross.
While early Christians used the T-shape to represent the cross in writing and gesture, the use of the Greek cross and Latin cross, i.e. crosses with intersecting beams, appears in Christian art towards the end of Late Antiquity. An early example of the cruciform halo, used to identify Christ in paintings, is found in the Miracles of the Loaves and Fishes mosaic of Sant'Apollinare Nuovo, Ravenna (6th century). The Patriarchal cross, a Latin cross with an additional horizontal bar, first appears in the 10th century. A wide variation of cross symbols is introduced for the purposes of heraldry beginning in the age of the Crusades.
Cross-like marks and graphemes
Sumerian cuneiform had a simple cross-shaped character, consisting of a horizontal and a vertical wedge (𒈦), read as maš "tax, yield, interest"; the superposition of two diagonal wedges results in a decussate cross (𒉽), read as pap "first, pre-eminent" (the superposition of these two types of crosses results in the eight-pointed star used as the sign for "sky" or "deity" (𒀭), DINGIR). The cuneiform script has other, more complex, cruciform characters, consisting of an arrangement of boxes or the fourfold arrangement of other characters, including the archaic cuneiform characters LAK-210, LAK-276, LAK-278, LAK-617 and the classical sign EZEN (𒂡).
Phoenician tāw is still cross-shaped in Paleo-Hebrew alphabet and in some Old Italic scripts (Raetic and Lepontic), and its descendant T becomes again cross-shaped in the Latin minuscule t. The plus sign (+) is derived from Latin t via a simplification of a ligature for et "and" (introduced by Johannes Widmann in the late 15th century).
The multiplication sign (×), often attributed to William Oughtred (who first used it in an appendix to the 1618 edition of John Napier's Descriptio) apparently had been in occasional use since the mid 16th century.
- ✕ ✖ ✗ ✘ ✙ ✚ ✛ ✜ ✝ ✞ ✟ ✠ ✢ ✣ ✤ ✥
The Miscellaneous Symbols block (U+2626 to U+262F) adds three specific Christian cross variants, viz. the Patriarchal cross (☦), Cross of Lorraine (☨) and "Cross of Jerusalem" (implemented as Cross potent, ☩).
The following is a list of cross symbols, except for variants of the Christian cross and Heraldic crosses, for which see the dedicated lists at Christian cross variants and Crosses in heraldry, respectively.
|Ankh||The ankh or crux ansata, an Egyptian hieroglyph representing "life".|
|Basque cross||The Basque cross or lauburu.|
|the Sun cross||The "sun cross" or "wheel cross" appears with some regularity in prehistoric European artefacts, usually interpreted as a solar symbol, perhaps representing the spoked wheel of the Sun chariot.|
The swastika or crux gammata (in heraldry fylfot), historically used as a symbol in Buddhism, Jainism and Hinduism, and widely popular in the early 20th century as a symbol of good luck or prosperity before adopted as a symbol of Nazism in the 1930s.
- As a design element
|Compass rose||A compass rose, sometimes called a windrose, is a figure on a compass, map, nautical chart or monument used to display the orientation of the cardinal directions and often appears as a cross tapering to triangular points.|
|Crossed keys||Symbol of the Papacy used in various emblems representing the keys to heaven.|
|Crossed swords||The crossed swords symbol (⚔ at Unicode U+2694) is used to represent battlegrounds on maps. It is also used to show that person died in battle or that a war machine was lost in action. Two crossed swords also look like a Christian cross and the mixed symbolism has been used in military decorations. It is also a popular way to display swords on a wall often with a shield in the center|
|Four-leaf clover||Used as a symbol for luck as well as a stand in for a cross in various works.|
|Skull and crossbones||Traditionally used to mark Spanish cemeteries; the symbol evolved to represent death/danger, poison, and pirates.|
Notable formations known as "cross"
- Crux, or the Southern Cross, is a cross-shaped constellation in the Southern Hemisphere. It appears on the national flags of Australia, Brazil, New Zealand, Niue, Papua New Guinea and Samoa.
- Notable free-standing Christian crosses (or Summit crosses): The tallest cross, at 152.4 metres high, is part of Francisco Franco's monumental "Valley of the Fallen", the Monumento Nacional de Santa Cruz del Valle de los Caidos in Spain. A cross at the junction of Interstates 57 and 70 in Effingham, Illinois, is purportedly the tallest in the United States, at 198 feet (60.3 m) tall. The tallest freestanding cross in the United States is located in Saint Augustine, FL and stands 208 feet.
- The tombs at Naqsh-e Rustam, Iran, made in the 5th century BC, are carved into the cliffside in the shape of a cross. They are known as the "Persian crosses".
- The Burj Al Arab in Dubai, looks like a big cross. It becomes apparent when viewed from the sea. 
Cross shapes are made by a variety of physical gestures. Crossing the fingers of one hand is a common invocation of the symbol. The sign of the cross associated with Christian genuflection is made with one hand: in Eastern Orthodox tradition the sequence is head-heart-right shoulder-left shoulder, while in Oriental Orthodox, Catholic and Anglican tradition the sequence is head-heart-left-right.
Crossing the index fingers of both hands represents and a charm against evil in European folklore. Other gestures involving more than one hand include the "cross my heart" movement associated with making a promise and the Tau shape of the referee's "time out" hand signal.
In Chinese-speaking cultures, crossed index fingers represent the number 10.
- Astrological symbols -the cross symbolically represents matter in many of these glyphs.
- Astronomical symbols -the crossmark may have been added to Christianize pagan god symbols.
- Cross-ndj (hieroglyph)
- Cross and Crown
- Cross burning
- Cross necklace
- Crossroads (mythology)
- Ogechukwu, Nwaocha Mind (17 July 2010). "The Secret Behind the Cross and Crucifix". Strategic Book Publishing. Retrieved 18 June 2016 – via Google Books.
- Livy, "Roman History" 38.48.13[clarification needed]
- G. de Mortillet, "Le signe de la croix avant le christianisme", Paris, 1866
- L. Müller, "Ueber Sterne, Kreuze und Kränze als religiöse Symbole der alten Kulturvölker", Copenhagen, 1865
- W. W. Blake, "The Cross, Ancient and Modern" New York, 1888
- Ansault, "Mémoire sur le culte de la croix avant Jésus-Christ", Paris, 1891.)
- "In the bronze age we meet in different parts of Europe a more accurate representation of the cross, as conceived in Christian art, and in this shape it was soon widely diffused. This more precise characterization coincides with a corresponding general change in customs and beliefs. The cross is now met with, in various forms, on many objects: fibulas, cinctures, earthenware fragments, and on the bottom of drinking vessels. De Mortillet is of opinion that such use of the sign was not merely ornamental, but rather a symbol of consecration, especially in the case of objects pertaining to burial. In the proto-Etruscan cemetery of Golasecca every tomb has a vase with a cross engraved on it. True crosses of more or less artistic design have been found in Tiryns, at Mycenæ, in Crete, and on a fibula from Vulci." O. Marucchi, "Archæology of the Cross and Crucifix", Catholic Encyclopedia (1908).
- "Archived copy". Archived from the original on 17 June 2015. Retrieved 17 June 2015.
- Vine, William Edwy (1940). "Cross, Crucify". Vine's Expository Dictionary of New Testament Words. Retrieved 2016-10-16.
The shape of the [two beamed cross] had its origin in ancient Chaldea, and was used as the symbol of the god Tammuz (being in the shape of the mystic Tau, the initial of his name) in that country and in adjacent lands, including Egypt.
- See also Abram Herbert Lewis, Paganism surviving in Christianity, G.P. Putnam's sons, 1892, pp 237, 238.
- "The cross as a Christian symbol or 'seal' came into use at least as early as the second century (see "Apost. Const." iii. 17; Epistle of Barnabas, xi.-xii.; Justin, "Apologia," i. 55-60; "Dial. cum Tryph." 85-97); and the marking of a cross upon the forehead and the chest was regarded as a talisman against the powers of demons (Tertullian, "De Corona," iii.; Cyprian, "Testimonies," xi. 21-22; Lactantius, "Divinæ Institutiones," iv. 27, and elsewhere). Accordingly the Christian Fathers had to defend themselves, as early as the second century, against the charge of being worshipers of the cross, as may be learned from Tertullian, "Apologia," xii., xvii., and Minucius Felix, "Octavius," xxix. Christians used to swear by the power of the cross. CROSS:, Jewish Encyclopaedia.
- "Clement of Alexandria: Stromata, Book 6". Earlychristianwritings.com. Retrieved 2016-06-18.
- Apology., chapter xvi. "Then, if any of you think we render superstitious adoration to the cross, in that adoration he is sharer with us. If you offer homage to a piece of wood at all, it matters little what it is like when the substance is the same: it is of no consequence the form, if you have the very body of the god. And yet how far does the Athenian Pallas differ from the stock of the cross, or the Pharian Ceres as she is put up uncarved to sale, a mere rough stake and piece of shapeless wood? Every stake fixed in an upright position is a portion of the cross; we render our adoration, if you will have it so, to a god entire and complete. We have shown before that your deities are derived from shapes modelled from the cross." Sed et qui crucis nos religiosos putat, consecraneus noster erit. Cum lignum aliquod propitiatur, viderit habitus, dum materiae qualitas eadem sit; viderit forma, dum id ipsum dei corpus sit. Et tamen quanto distinguitur a crucis stipite Pallas Attica, et Ceres Pharia, quae sine effigie rudi palo et informi ligno prostat? Pars crucis est omne robur, quod erecta statione defigitur; nos, si forte, integrum et totum deum colimus. Diximus originem deorum vestrorum a plastis de cruce induci.
- "At every forward step and movement, at every going in and out, when we put on our clothes and shoes, when we bathe, when we sit at table, when we light the lamps, on couch, on seat, in all the ordinary actions of daily life, we trace upon the forehead the sign" (De Corona, chapter 3)
- William Wood Seymour, "The Cross in Heraldry", The Cross in Tradition, History, and Art (1898).
- An example of a cruciform arrangement of a character that is itself cruciform is the ligature "EZEN x KASKAL squared", encoded by Unicode at U+120AD (𒂭).
- Florian Cajori, A History of Mathematical Notations Dover Books on Mathematics (1929), 251f.
- "The Cross Foundation Midwest Christian Monument Crucifix Spiritual Meditation Fellowship Retreat". crossusa.org. Retrieved 18 June 2016.
- "Archived copy". Archived from the original on 13 April 2012. Retrieved 3 April 2012.
- Chevalier, Jean (1997). The Penguin Dictionary of Symbols. Penguin ISBN 0-14-051254-3.
- Drury, Nevill (1985). Dictionary of Mysticism and the Occult. Harper & Row. ISBN 0-06-062093-5.
- Koch, Rudolf (1955). The Book of Signs. Dover, NY. ISBN 0-486-20162-7.
- Webber, F. R. (1927, rev. 1938). Church Symbolism: an explanation of the more important symbols of the Old and New Testament, the primitive, the mediaeval and the modern church. Cleveland, OH. OCLC 236708.
|Wikimedia Commons has media related to Crosses.|
- Seiyaku.com, all Crosses - probably the largest collection on the Internet
- Lutheransonline.com, variations of Crosses—images and meanings
- Cross & Crucifix - Glossary: Forms and Topics
- Nasrani.net, Indian Cross
- Freetattoodesigns.org, The Cross in Tattoo Art
- The Christian Cross of Jesus Christ: Symbols of Christianity, Images, Designs and representations of it as objects of devotion