ideogramPronunciation: /ˈɪdɪə(ʊ)gram, ˈʌɪd-/Definition of ideogram noun a character symbolizing the idea of a thing without indicating the sounds used to say it. Examples include numerals and Chinese characters. Origin: mid 19th century: from Greek idea 'form' + -gram1ideogram in other Oxford dictionaries Definition of ideogram in the US English dictionary