/ Dictionary / Index W witch of Agnesi: Meaning and Definition of Find definitions for: witch' of A•gne'si Pronunciation: (ä-nyā'zē), [key] — Geom. Geom. a plane curve symmetrical about the y-axis and asymptotic to the x-axis, given by the equation xy=4a(2a−y). Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. witch moth witch's mark Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language