/ Dictionary / Index H hyperpolarize: Meaning and Definition of Find definitions for: hy•per•po•lar•ize Pronunciation: (hī"pur-pō'lu-rīz"), [key] — v., -ized, -iz•ing. —v.t. to increase the difference in electric potential across (a cell membrane). —v.i. to undergo such an increase. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyperpnea hyperpotassemia Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language