Dictionary.com

gibbous

[ gib-uhs ]
/ ˈgɪb əs /
Save This Word!

adjective
Astronomy. (of a heavenly body) convex at both edges, as the moon when more than half full.
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.
Also gib·bose [gib-ohs]. /ˈgɪb oʊs/.

Origin of gibbous

1350–1400; Middle English <Latin gibbōsus humped, equivalent to gibb(a) hump + -ōsus-ous

OTHER WORDS FROM gibbous

gib·bous·ly, gib·bose·ly, adverbgib·bous·ness, gib·bose·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use gibbous in a sentence

British Dictionary definitions for gibbous

gibbous

gibbose (ˈɡɪbəʊs)

/ (ˈɡɪbəs) /

adjective
(of the moon or a planet) more than half but less than fully illuminated
having a hunchback; hunchbacked
bulging

Derived forms of gibbous

gibbously, adverbgibbousness, noun

Word Origin for gibbous

C17: from Late Latin gibbōsus humpbacked, from Latin gibba hump
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for gibbous

gibbous
[ gĭbəs ]

More than half but less than fully illuminated. Used to describe the Moon or a planet. Compare crescent.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK