gibbous

C2 Topic:Describing Qualities

US /ˈɡɪbəs/ UK /ˈɡɪbəs/ See IPA manual

Freq #139194

Meanings

1

adj
having more than half but less than all of the visible disk illuminated, especially of the moon

A waxing gibbous moon rose above the trees before sunset.
2

adj
curved or bulging outward; convex

The vessel had a gibbous side that projected beyond its base.
3

adj
humped or abnormally curved, especially in reference to the back

The old medical illustration showed a gibbous curvature of the spine.

Thesaurus

Synonyms

1 adj · having more than half but... more-than-half-full

2 adj · curved or bulging outward;... bulgingconvex protuberant

3 adj · humped or abnormally... humpbackedkyphotic

More humped

Opposites

concave crescent

Word family

Derived forms gibbosegibbositygibbouslygibbousness

Related forms gibbuskyphosis

Etymology

From Middle English gibbous, from Latin gibbus ("hump, hunch"). The astronomical sense describes the moon or a planet as visibly bulging beyond a half disk while not yet full.

Topics

Describing Qualities Word Formation & Derivatives

External links

# gibbous

**Type:** Word
**Level:** C2
**Part of speech:** adj
**IPA (US):** /ˈɡɪbəs/
**IPA (UK):** /ˈɡɪbəs/
**Frequency rank:** 139194

## Meanings
1. having more than half but less than all of the visible disk illuminated, especially of the moon
2. curved or bulging outward; convex
3. humped or abnormally curved, especially in reference to the back

## Examples
- A waxing gibbous moon rose above the trees before sunset.
- The vessel had a gibbous side that projected beyond its base.
- The old medical illustration showed a gibbous curvature of the spine.

## Synonyms
- bulging
- convex
- protuberant
- humped

## Antonyms
- concave
- crescent

## Derived Forms
- gibbose
- gibbosity
- gibbously
- gibbousness

## Related Forms
- gibbus
- kyphosis

## Etymology
From Middle English gibbous, from Latin gibbus ("hump, hunch"). The astronomical sense describes the moon or a planet as visibly bulging beyond a half disk while not yet full.

## Topics
- Describing Qualities
- Word Formation & Derivatives

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