Triangulum

[ trahy-ang-gyuh-luhm ]

/ traɪˈæŋ gyə ləm /

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noun, genitive Tri·an·gu·li

[trahy-ang-gyuh-lahy]. /traɪˈæŋ gyəˌlaɪ/. Astronomy.

the Triangle, a northern constellation between Pisces and Perseus.

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Origin of Triangulum

Borrowed into English from New Latin around 1545–55

Words nearby Triangulum

triangular matrix, triangular trade, triangulate, triangulation, triangulation station, Triangulum, Triangulum Australe, triannual, triapsidal, triarchy, triaryl

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use Triangulum in a sentence

Over the next year or so, he studied 35 Cepheids in Andromeda and a different nebula called Triangulum.
A century of astronomy revealed Earth’s place in the universe|Lisa Grossman|July 21, 2021|Science News
Al trigon, insecto sedente, cum corpore triangulum subhorizontale efficientes, superiores margine externo recto.
Zoological Illustrations, Volume II|William Swainson
Triangulum is a very ancient constellation, being formerly named Deltoton, from the Greek letter Delta Δ.
A Field Book of the Stars|William Tyler Olcott
For a second example of the spiral nebulæ look at the one in the constellation Triangulum.
Curiosities of the Sky|Garrett Serviss

The Andromeda Nebula is apparently less advanced toward transformation into stellar bodies than is that in Triangulum.
Curiosities of the Sky|Garrett Serviss
Circinus, the Compass, is a very small constellation lying between Triangulum and Centaurus.
Astronomical Curiosities|J. Ellard Gore

British Dictionary definitions for Triangulum

Triangulum

/ (traɪˈæŋɡjʊləm) /

noun Latin genitive Trianguli (traɪˈæŋɡjʊˌlaɪ)

a small triangular constellation in the N hemisphere, close to Perseus and Aries

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012