# polyiamond

> English word · Noun

## Definitions
1. A polyform made by joining one or more equilateral triangles edge to edge in various arrangements, with every polyiamond corresponding to a polyhex.

## Etymology
Blend of poly- + diamond, the polyiamond made up of two triangles being a diamond or rhombus.

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