# Triangulum Australe

> English word · Proper noun

## Definitions
1. A winter constellation of the southern sky, which has three bright stars that form a triangle. It lies north of the constellation Apus, between Ara and Circinus.

## Etymology
Named by Dutch explorers Pieter Dirkszoon Keyser and Frederick de Houtman between 1595 and 1597. From Latin triangulum (“triangl”) + australe (“southern”).

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