/ Dictionary / Index F family of curves: Meaning and Definition of Find definitions for: fam'ily of curves' Pronunciation: [key] — Math. Math. a collection of curves whose equations differ only by values assigned a parameter or parameters. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. family name family plan Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language