/ Thesaurus / T Synonyms of thrombocytosis Find synonyms for: Noun1. thrombocytosis, symptomusage: increase in the number of platelets in the blood which tends to cause clots to form; associated with many neoplasms and chronic infections and other diseasesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language