Glossary of Medical Terms

Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine


The escape of blood from the vessels, bleeding. Small haemorrhages are classified according to size as petechiae (very small), purpura (up to 1 cm) and ecchymoses (larger). The massive accumulation of blood within a tissue is called a haematoma. Origin: Gr. Rhegnynai = to burst forth This entry appears with alow from the Vocabulary of Cell and Molecular Biology
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