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A pictogram, also called a pictogramme or pictograph, is an ideogram that conveys its meaning through its pictorial resemblance to a physical object. Pictographs are often used in writing and graphic systems in which the characters are to a considerable extent pictorial in appearance.
Pictography is a form of writing which uses representational, pictorial drawings. It is a basis of cuneiform and, to some extent, hieroglyphic writing, which also uses drawings as phonetic letters or determinative rhymes.
Early written symbols were based on pictographs (pictures which resemble what they signify) and ideograms (symbols which represent ideas). Ancient Sumerian, Egyptian, and Chinese civilizations began to use such symbols over, developing them into logographic writing systems. Pictographs are still in use as the main medium of written communication in some non-literate cultures in Africa, The Americas, and Oceania. Pictographs are often used as simple, pictorial, representational symbols by most contemporary cultures.
Pictographs can be considered an art form, and are designated as such in Pre-Columbian art, Native American art, and Painting in the Americas before Colonization. One example of many is the Rock art of the Chumash people, part of the Native American history of California. In 2011, UNESCO World Heritage adds to its list a new site "Petroglyphs Complexes of the Mongolian Altai, Mongolia" to celebrate the importance of the pictograms engraved in rocks.
Some scientists in the field of neuropsychiatry and neuropsychology, such as Prof. Dr. Mario Christian Meyer, are studying the symbolic meaning of indigenous pictograms and petroglyphs, aiming to create new ways of communication between native people and modern scientists to safeguard and valorize their cultural diversity.
Modern use 
An early modern example of the extensive use of pictographs may be seen in the map in the London suburban timetables of the London and North Eastern Railway, 1936-1947, designed by George Dow, in which a variety of pictographs was used to indicate facilities available at or near each station. Pictographs remain in common use today, serving as pictorial, representational signs, instructions, or statistical diagrams. Because of their graphical nature and fairly realistic style, they are widely used to indicate public toilets, or places such as airports and train stations.
Pictographic writing as a modernist poetic technique is credited to Ezra Pound, though French surrealists accurately credit the Pacific Northwest American Indians of Alaska who introduced writing, via totem poles, to North America.
Contemporary artist Xu Bing created Book from the Ground, a universal language made up of pictograms collected from around the world. A Book from the Ground chat program has been exhibited in museums and galleries internationally.
Pictographs can often transcend languages in that they can communicate to speakers of a number of tongues and language families equally effectively, even if the languages and cultures are completely different. This is why road signs and similar pictographic material are often applied as global standards expected to be understood by nearly all.
A standard set of pictographs was defined in the international standard ISO 7001: Public Information Symbols. Another common set of pictographs are the laundry symbols used on clothing tags and chemical hazard labels.
A pictograph warning against swimming because of crocodiles at the Australia Zoo.
This sign warns that a stop sign is ahead.
Sample National Park Service pictographs
See also 
- List of symbols
- List of writing systems (sublist for those using pictograms)
- Icon (computing)
- Stick figure
- Gove, Philip Babcock. (1993). Webster's Third New International Dictionary of the English Language Unabridged. Merriam-Webster Inc. ISBN 0-87779-201-1.
- Reed 2003, p. xix
|Wikimedia Commons has media related to: Pictograms|
|Look up pictogram in Wiktionary, the free dictionary.|
- Pictogram & Communication: About 1,500 practial pictograms based on Design principles of pictorial symbols for communication support(JIS T 0103:2005)
- CAPL:The Culturally Authentic Pictorial Lexicon, photographic illustrations of objects for multiple languages
- Pictogram Encyclopedia, The collection site of more than 500 pictograms, Pictograms are categorized, and easy to find unique pictogram
- Pictopen - Modern Pictographic Writing
- NounProject - Free Pictograms under open licences