/ Dictionary / Index C cerebellum: Meaning and Definition of Find definitions for: cer•e•bel•lum Pronunciation: (ser"u-bel'um), [key] — pl. -bel•lums, -bel•la a large portion of the brain, serving to coordinate voluntary movements, posture, and balance in humans, being in back of and below the cerebrum and consisting of two lateral lobes and a central lobe. See illus. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cerebellum (Thesaurus) cereal leaf beetle cerebr- Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language