Dictionary
chick•en-and-egg
Pronunciation: (chik'un-un-eg', -und-), [key]—
adj.
of, pertaining to, or being a dilemma of which of two things came first or of which is the cause and which the effect:
a chicken-and-egg question of whether matter or energy is the basis of the universe. Also,chick•en-or-eggPronunciation: (chik'un-ur-eg'). [key]Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.