Gibbous Definition
gĭbəs
adjective
Protuberant; rounded and bulging.
Webster's New World
Designating the moon, a planet, etc. in that phase in which more than half, but not all, of the face reflects sunlight to the earth.
Webster's New World
Humpbacked; kyphotic.
Webster's New World
Synonyms:
- kyphotic
- hunchbacked
- humpbacked
- humped
- crookbacked
- crookback
- gibbose
- bunchbacked
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Origin of Gibbous
-
From Middle English, from Latin gibbus (“humped, hunched”), probably cognate with cubō (“bend oneself, lie down”), Italian gobba (“humpback”), Greek κύφος (kýfos, “humpback, bent”), κύβος (kývos, “cube, vertebra”).
From Wiktionary
Middle English bulging from Late Latin gibbōsus hunch-backed from Latin gibbus hump
From American Heritage Dictionary of the English Language, 5th Edition
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