adapted from Ital. uovolo, diminutive of uovo, an egg; other foreign equivalents are Fr. ove, échine, quart de rond; Lat. echinus... [as used] in architecture, [for] a convex moulding known also as the echinus, which in Classic architecture was invariably carved with the egg and tongue. In Roman and Italian work the moulding is called by workmen a quarter round.
The "egg and tongue" referred to, also known as egg-and-dart, egg-and-anchor, or egg-and-star, refers to alternating egg and V-shapes enriching the surface of the concave ovolo in many early cases.:116
The description of ovolo as the fundamental convex quarter-round element underlying or being combined with other elements to compose molding, details on column capitals, and other architectural ornamentation remains in common use, as evidenced by the description by Lewis and Darley (1986) of the ovolo as a "[c]onvex moulding... usually a quarter of a circle in section", which also notes that it is "often enriched with egg and dart or similar ornament". :222 Ovolo adornment by the egg-and-dart element was used on Ionic capitals by ancient Roman and ancient Greek builders (e.g., at the Erechtheion), and continue to adorn capitals of modern buildings built in Classical styles (e.g., the Ionic capitals of the Jefferson Memorial in Washington, D.C.), and to find use in Neoclassical architecture.[better source needed]
The fundamental element of ornamental, architectural molding that is concave (rather than convex like the ovolo) is found in cavetto or hollow chamfering moldings, which also usually presents a quarter-round cross-section, albeit concave.:73 Ovolo and cavetto elements can be combined to form compound moldings; most simply, with the convex ovolo molding below the cavetto, it is known as cyma recta (for its wave-like cross-section), a type of common edge profile commonly referred to as ogee.:97 The compound molding with the concave cavetto below and the convex ovolo above is termed cyma reversa.:97 In modern residential applications, the ovolo profile is often used as the inside edge of stile and rail interior and cabinet doors.
The Britannica article goes on to note that the echinus synonym of ovolo should "not be confounded with the echinus of the Greek Doric capital", which is "of a more varied form and of much larger dimensions than the ovolo, which was only a subordinate moulding."
- Chisholm, Hugh, ed. (1911). "Ovolo". Encyclopædia Britannica. 20. p. 391. Retrieved January 9, 2020.CS1 maint: extra text: authors list (link)
- Lewis, Philippa & Darley, Gillian (1986). Dictionary of Ornament. New York: Pantheon Books. pp. 222, 73, 97, and 116. ISBN 0-394-50931-5. Retrieved January 9, 2020.
cavetto moulding or hollow chamfering (Latin, cavare, to hollow). One of the principal forms of moulding, a concave version of the ovolo moulding, usually a quarter of a circle in section. [p. 73] / cyma recta (Latin, cyma, wave). Important compound moulding, combining the ovolo and cavetto with the convex moulding below. In section the moulding is a double curve, concave above, convex below. Also known as ogee moulding. cyma reversa... [presenting concave below, convex above, p. 97] / ovolo. Convex moulding (usually a quarter of a circle in section), often enriched with egg and dart or similar ornament. [p. 222]CS1 maint: multiple names: authors list (link)
- Shoe, Lucy T. (1936) Profiles of Greek Mouldings,[full citation needed] and Shoe, Lucy T. (1950) "Greek Mouldings of Kos and Rhodes", Hesperia 19(4, Oct-Dec):338-369.
- Regan, Raina (February 21, 2012). "Building Language: Egg-and-dart". Historic Indianapolis. historicindianapolis.com. Retrieved 11 September 2016.
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