/ Dictionary / Index A A-axis: Meaning and Definition of Find definitions for: A-ax•is Pronunciation: (ā'ak"sis), [key] — pl. A-ax•es the horizontal crystallographic axis passing from front to back. Cf. B-axis, C-axis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. A.A.U.W. Ab Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language