Top, Help, Feedback, Customize Type in a word below to find its rhymes, synonyms, definitions, and more: Word:  Find rhymes Find near rhymes Find synonyms Find antonyms Find definition Appears in definition of Find related words Find similar sounding words Find homophones Check spelling of word Match consonants only Match these letters Search in Shakespeare Search for quotations Organize results by: Syllables Letters     Include phrases: Yes No [Definitions]   Definitions of cotan: noun:   ratio of the adjacent to the opposite side of a right-angled triangle Search for cotan at other dictionaries: OneLook, Answers.com, Merriam-Webster Search for cotan:    [Definition]   Encyclopedia   Copyright © 2010 Datamuse