Dictionary
A-ax•is
Pronunciation: (ā'ak"sis), [key]—
n.,
—pl. A-ax•esPronunciation: (ā'ak"sēz). [key]
Crystall.
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.