thrombocytosis
noun
throm·bo·cy·to·sis
| \ ˌthräm-bə-ˌsī-ˈtō-səs
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plural thrombocytoses\ -ˈtō-sēz
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Medical Definition of thrombocytosis
: 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)
also
: thrombocythemia