throm·​bo·​cy·​to·​sis ˌthräm-bə-ˌsī-ˈtō-səs How to pronounce thrombocytosis (audio)
plural thrombocytoses -ˈtō-sēz How to pronounce thrombocytosis (audio)
: increase and especially abnormal increase in the number of platelets in the blood that typically occurs in association with a myeloproliferative disorder (as thrombocythemia or chronic myelogenous leukemia) or as a nonspecific response to an underlying disorder or disease (as a systemic infection)

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Cite this Entry

“Thrombocytosis.” Medical Dictionary, Merriam-Webster, Accessed 26 Sep. 2023.

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