order of aberration

order of aberration

[′ȯrd·ər əv ‚ab·ə′rā·shən]

(optics)

The sum of the powers to which the field height and the pupil coordinates are raised in describing a term in the decomposition of an aberration according to the degree of dependence on these variables.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.