thrombocythaemia
noun [ U ] medical UK specialized (US thrombocythemia) uk/ˌθrɒb.əʊ.saɪˈθiː.mi.ə/ us/ˌθrɑːm.boʊ.saɪˈθiː.mi.ə/
血小板增多症
a blood disorder in which the body produces too many platelets (= very small cells in the blood that make it thicker in order to stop bleeding caused by an injury)
In some patients with thrombocythemia, blood clots can be a serious problem. 在一些患有血小板增多症的病人中，血凝块可能造成很严重的问题。