noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The science of signs, particularly of verbal signs, in the operation of thinking and reasoning; the science of language as expressed by signs. uncountable, usually

Etymology

From Ancient Greek σῆμα (sêma, “mark, sign”) + Ancient Greek -λογία (-logía, “-logy, branch of study”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.