arbelos

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noun

A plane region bounded by a semicircle of diameter 1, connected to semicircles of diameters r and (1 − r), all oriented the same way and sharing a common baseline.

OriginAncient Greek ἄρβηλος →
Scrabble 9
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Meanings

arbelos1

nounarbelos (plural arbeloses)

plural arbeloses

  1. geometryA plane region bounded by a semicircle of diameter 1, connected to semicircles of diameters r and (1 − r), all oriented the same way and sharing a common baseline.

Arbelos2

proper noun
  1. pluralplural of Arbelo

Origin

  1. Ancient Greekἄρβηλος
  2. Englisharbelos

From Ancient Greek ἄρβηλος (árbēlos) or ἄρβυλος (árbulos), literally "shoemaker's knife".

More words from Ancient Greek

Full word history & related roots →

Rhymes & wordplay

Anagrams

BorlaseRosabelbalserosolebarlabrose
Cite this entry
APA

arbelos. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/arbelos

MLA

“arbelos.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/arbelos. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “arbelos,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/arbelos.

Source: arbelos on Wiktionary, CC BY-SA 4.0.