/ Dictionary / Index M Moseley: Meaning and Definition of Find definitions for: Mose•ley Pronunciation: (mōz'lē), [key] 1887–1915, English physicist: pioneer in x-ray spectroscopy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Moscow mule Moseley's law Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language