/ Dictionary / Index B blood plasma: Meaning and Definition of Find definitions for: blood' plas"ma Pronunciation: [key] the plasma or liquid portion of human blood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. blood packing blood platelet Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language