/ Dictionary / Index N noctis: Meaning and Definition of Find definitions for: noc•tis Pronunciation: (nok'tis), [key] — adj. (in prescriptions) of the night. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. noctilucent noctograph Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language