/ Dictionary / Index N Norplant: Meaning and Definition of Find definitions for: Nor•plant Pronunciation: (nôr'plant"), [key] Trademark. a long-term contraceptive for women, usuually effective for 5 years, consisting of several small slow-release capsules of progestin implanted under the skin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Norodom Sihanouk Norridge Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language