follow Dictionary.com

Why is the ninth month called September?

Messier number

noun, Astronomy
1.
a number (preceded by M) designating the 109 double stars, clusters, nebulae, and galaxies in the Messier catalog.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source

Word of the Day

Difficulty index for Messier number

Few English speakers likely know this word

Word Value for Messier

9
10
Scrabble Words With Friends

Nearby words for messier number