/ Dictionary / Index F fundamental star: Meaning and Definition of Find definitions for: fun'damen'tal star' Pronunciation: [key] — Astron. Astron. one of a number of stars with positions that have been determined accurately and that are used as reference stars for the determination of positions of other celestial objects. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fundamental sequence fundamental unit Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language