gibbous
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gibbous
, gibbose (of the moon or a planet) more than half but less than fully illuminated
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
gibbous
[′jib·əs] (mathematics)
Bounded by convex curves.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.