periapsis

(redirected from periapses)
Also found in: Dictionary, Thesaurus.

periapsis

(pe-ree-ap -sis) See apsides.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

periapsis

[‚per·ē′ap·səs]
(astronomy)
The orbital point nearest the center of attraction of an orbiting body.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.