/ Dictionary / Index H hemostat: Meaning and Definition of Find definitions for: he•mo•stat Pronunciation: (hē'mu-stat", hem'u-), [key] — n. an instrument or agent used to compress or treat bleeding vessels in order to arrest hemorrhage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hemostat (Thesaurus) hemostasis hemostatic Related Content Daily Word Quiz: plausible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language