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[hee-ma-toh-muh, hem-uh-] /ˌhi mæˈtoʊ mə, ˌhɛm ə-/

noun, plural hematomas, hematomata
[hee-ma-toh-muh-tuh, hem-uh-] /ˌhi mæˈtoʊ mə tə, ˌhɛm ə-/ (Show IPA). Pathology.
a circumscribed collection of blood, usually clotted, in a tissue or organ, caused by a break in a blood vessel.

1826, from hemato- + -oma.

hematoma he·ma·to·ma (hē’mə-tō’mə)
n. pl. he·ma·to·mas or he·ma·to·ma·ta (-mə-tə)
A localized swelling filled with blood resulting from a break in a blood vessel.
Plural hematomas or hematomata (hē’mə-tō’mə-tə)
The abnormal buildup of blood in an organ or other tissue of the body, caused by a break in a blood vessel.


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  • Hematometry

    hematometry he·ma·tom·e·try (hē’mə-tŏm’ĭ-trē) n. Examination of the blood to determine the total number and relative proportions of various blood cells and the percentage of hemoglobin.

  • Hematomphalocele

    hematomphalocele he·ma·tom·phal·o·cele (hē’mə-tŏm-fāl’ə-sēl’, -tŏm’fə-lō-sēl’) n. An umbilical hernia in which there is an effusion of blood.

  • Hematomyelia

    hematomyelia he·ma·to·my·e·li·a (hē’mə-tō-mī-ē’lē-ə, hĭ-māt’ə-) n. Hemorrhage into the substance of the spinal cord, usually caused by trauma. Also called hematorrhachis interna, myelapoplexy, myelorrhagia.

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