/ Dictionary / Index V Van Allen: Meaning and Definition of Find definitions for: Van Al•len Pronunciation: (van al'un), [key] born 1914, U.S. physicist. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vanadous Van Allen belt Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language