/ Dictionary / Index W wheel animalcule: Meaning and Definition of Find definitions for: wheel' animal"cule Pronunciation: [key] a rotifer. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wheel and axle wheel back Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language