/ Dictionary / Index T transmembrane: Meaning and Definition of Find definitions for: trans•mem•brane Pronunciation: (trans-mem'brān, tranz-), [key] — adj. Biol. occurring across a membrane, as an electric potential or the transport of ions or gases. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. transmarine transmethylation Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language