from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The astronomical study of the moon.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The scientific study of the Moon.
from the GNU version of the Collaborative International Dictionary of English
- n. That branch of astronomy which treats of the moon.
from The Century Dictionary and Cyclopedia
- n. Same as selenography.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the branch of astronomy that deals with the moon
selen- (“moon”) + -o- + -logy (“study”) (Wiktionary)