/ Dictionary / Index P Premarin: Meaning and Definition of Find definitions for: Prem•a•rin Pronunciation: (prem'u-rin), [key] — Pharm., Trademark. Pharm.,Trademark. a brand name for a mixture of conjugated natural estrogens used to treat menopausal symptoms, dysfunctional uterine bleeding, and certain cancers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prem. premarital Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language