A logogram is a written character which nom a word or morpheme. A vast number of logograms are needed to write Chinese characters, cuneiform, and Mayan, where a glyph may stand for a morpheme, a syllable, or both – (“logoconsonantal” in the case of hieroglyphs). Many logograms have an ideographic component (Chinese “radicals”, hieroglyphic “determiners”). For example, in Mayan, the glyph for “fin”, pronounced “ka”, was also used to represent the syllable “ka” whenever the pronunciation of a logogram needed to be ca, or when there was no logogram. In Chinese, about 90% of characters are compounds of a semantic (meaning) element called a radical with an existing character to indicate the pronunciation, called a phonetic. However, such phonetic elements complement the logographic elements, rather than vice versa.
The main logographic system in use today is Chinese characters, used with some modification for the various languages or dialects of China, Japan, and sometimes in Korean despite the fact that in South and North Korea, the phonetic Hangul system is mainly used.
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