birectangular

English

Etymology

Etymology tree

Proto-Indo-European *dwóh₁

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Proto-Indo-European *trísinflu.?

Proto-Indo-European *dwi-

Proto-Italic *dwi-

Latin bi-bor.

English bi-

English rectangle

Proto-Indo-European *h₂el-

Proto-Indo-European *-is

Proto-Indo-European *h₂élisder.?

Proto-Italic *-ālis

Latin -ālis

Latin -ārisbor.

English -ar

English rectangular

English birectangular

From bi- + rectangular.

Pronunciation

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Adjective

birectangular (not comparable)

1. Containing two right angles.

   Unlike a normal triangle, a spherical triangle can be birectangular because the sum of its angles is greater than 180 degrees.