idiograph

[id-ee-uh-graf, -grahf] /ˈɪd i əˌgræf, -ˌgrɑf/

noun

a mark or signature characteristic of a particular person, organization, etc.; trademark.

Compare logotype (def 2).

Origin

1615-25; < Late Greek idiógraphon, noun use of neuter of Greek idiógraphos self-written. See idio-, -graph

Can be confused

ideograph, idiograph.