Pictogram

A pictograph (also called pictogram or pictogramme) is an ideogram that conveys its meaning through its pictorial resemblance to a physical object. Earliest examples of pictographs include ancient or prehistoric drawings or paintings found on rock walls. Pictographs are also used in writing and graphic systems in which the characters are to 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 uses drawings also 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). They were used by the ancient Chinese culture since around 5000 BC and began to develop into logographic writing systems around 2000 BC. 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 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.

Pictographs can also take the form of diagrams to represent statistical data by pictorial forms, and can be varied in color, size, or number to indicate change.