/ Dictionary / Index S selenology: Meaning and Definition of Find definitions for: sel•e•nol•o•gy Pronunciation: (sel"u-nol'u-jē), [key] — n. the branch of astronomy that deals with the nature and origin of the physical features of the moon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: selenology (Thesaurus) selenography selenotropism Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language