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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.

Only a few spirals—such as the Andromeda and Triangulum Galaxies and M81—all of which are now known to be our close neighbors, turned out to be approaching us.

From Textbooks • Oct. 13, 2016

Dr. Edwin Hubble of Mount Wilson Observatory for measurement of the distance to two remote spiral nebulae in Andromeda and Triangulum.

From Time Magazine Archive

Faced with incomprehensible distances, intimidating mathematics and names like Triangulum Australe, the temptation is to do one's stargazing on the Tonight show.

From Time Magazine Archive

Location.—Musca lies between Triangulum and Aries, the diagram clearly defining its position.

From A Field Book of the Stars by Olcott, William Tyler

It is far advanced and torn to shreds, and if we could look at it perpendicularly to its plane it is evident that it would closely resemble the spectacle in Triangulum.

From Curiosities of the Sky by Serviss, Garrett Putman