Phonogram (linguistics)

A phonogram is a grapheme (written character) which represents a phoneme (speech sound) or combination of phonemes, such as the letters of the Latin alphabet or Korean letter Hangul. For example, "igh" is an English-language phonogram that represents the aɪ sound in "high". Whereas the word phonemes refers to the sounds, the word phonogram refers to the letter(s) that represent that sound. Phonograms contrast with logograms, which represent words and morphemes (meaningful units of language), and determinatives, silent characters used to mark semantic categories.