/ Dictionary / Index P phimosis: Meaning and Definition of Find definitions for: phi•mo•sis Pronunciation: (fī-mō'sis, fi-), [key] — pl. -ses constriction of the orifice of the prepuce so as to prevent the foreskin from being drawn back to uncover the glans penis. a similar condition involving the clitoris. narrowness of the vagina. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phimosis (Thesaurus) -phily Phineas Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language