b axis

b axis

[′bē ‚ak·səs]
(crystallography)
A crystallographic axis that is oriented horizontally, right to left.
(mechanical engineering)
The angle that specifies the rotation of a machine tool about the y axis.
(petrology)
A direction in the plane of movement that is at a right angle to the tectonic transport direction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.