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Triangulum

American  
[trahy-ang-gyuh-luhm] / traɪˈæŋ gyə ləm /

noun

Astronomy.

genitive

Trianguli
  1. the Triangle, a northern constellation between Pisces and Perseus.


Triangulum British  
/ traɪˈæŋɡjʊləm /

noun

  1. 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

Etymology

Origin of Triangulum

Borrowed into English from New Latin around 1545–55

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Joining us is the Andromeda galaxy, a slightly larger twin of the Milky Way, about 2.5 million light years distant, and, slightly farther away, a smaller spiral in the Triangulum constellation called M33.

From New York Times

The Triangulum Galaxy — also known as Messier 33 or NGC 598 — is part of the "Local Group," meaning it is part of the same group of galaxies that the Milky Way belongs to.

From Fox News

In this case the asterism is made up of stars from the constellations Libra, Virgo, Centaurus, and Triangulum Australe.

From National Geographic

They used computer simulations to model an entire Milky Way–like galaxy and its neighbors, the Andromeda and Triangulum galaxies.

From Science Magazine

By then, the smaller Triangulum galaxy may have already collided with either of its two larger neighbors.

From Science Magazine