# equilateral

> English word · Adjective · frequency rank #62,874

## Definitions
1. Having all the sides equal.
2. Having all the faces equal.
3. Having the two sides equal, as a surface divisible by a longitudinal median line into two halves of the same form.
4. Having all the convolutions of the shell in one plane, chiefly of foraminifers.

## Etymology
From equi- + lateral.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/equilateral