Added 9 October 2026
gibbous
/ˈɡɪbəs/ adjective
Latin root: gibbus Wiktionary
adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about gibbous at Wordnik → Where our words come from →
- Curved or bulged outward.
- Having more than half (but not the whole) of its disc illuminated.
- Humpbacked.
Origin
From Middle English gibbous, from Latin gibbus (“humped, hunched”), probably cognate with cubō (“bend oneself, lie down”), Italian gobba (“humpback”), Ancient Greek κῡφός (kūphós, “humpback, bent”), κύβος (kúbos, “cube, vertebra”), Spanish giboso (“humped”). Also ultimately compare dialectal Norwegian keiv (“slanted, wrong”), German schief (“crooked, slanting”) and Dutch scheef (“crooked, slanting”).
From Wiktionary, via Kaikki.org (CC BY-SA)