/ Dictionary / Index K kinin: Meaning and Definition of Find definitions for: ki•nin Pronunciation: (kī'nin, kin'in), [key] — n. Biochem. cytokinin. any of a group of hormones, formed in body tissues, that cause dilation of blood vessels and influence capillary permeability. -kinin Pronunciation: [key] a combining form used in the names of hormones, esp. peptide hormones: bradykinin; cytokinin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: kinin (Thesaurus) kingwood kink Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language