Breadcrumb Home > Dictionary > Index O Ortho-Novum: Meaning and Definition of Find definitions for: Or•tho-No•vum Pronunciation: (ôr"thō-nō'vum), [key] — Pharm., Trademark. Pharm.,Trademark. a brand name for a tablet containing the progestogen norethindrone and an estrogen, used as an oral contraceptive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. orthonormal orthopedic TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: mantra Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language