The medical specialty that pertains to the anatomy, physiology, pathology, symptomatology, and therapeutics related to the blood and blood-forming tissues. SYN: hemology. [hemato- + G. logos, study]
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he·ma·tol·o·gy or chiefly Brit hae·ma·tol·o·gy .hē-mə-'täl-ə-jē n, pl -gies a medical science that deals with the blood and blood-forming organs
he·ma·tol·o·gist or chiefly Brit hae·ma·tol·o·gist -jəst n
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he·ma·tol·o·gy (he″mə-tolґə-je) [hemato- + -logy] the branch of medical science that deals with the blood and blood-forming tissues.Medical dictionary. 2011.