/ Thesaurus / M Synonyms of mast cell Find synonyms for: Noun1. mast cell, mastocyte, labrocyte, somatic cell, vegetative cellusage: a large connective tissue cell that contains histamine and heparin and serotonin which are released in allergic reactions or in response to injury or inflammationWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language