/ Dictionary / Index N nidation: Meaning and Definition of Find definitions for: ni•da•tion Pronunciation: (nī-dā'shun), [key] — n. Embryol. implantation of an embryo in the lining of the uterus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nidation (Thesaurus) Nidaros nide Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language