/ Dictionary / Index D Dalén: Meaning and Definition of Find definitions for: Da•lén Pronunciation: (du-lān', da-), [key] 1869–1937, Swedish inventor: Nobel prize for physics 1912. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dale dalesman Related Content Daily Word Quiz: inane Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language