The medical term "effusion of blood" refers to the leakage of blood outside the blood vessels. This condition can lead to serious health problems and may cause a range of symptoms. It can be helpful to have a variety of synonyms to accurately describe this condition to healthcare professionals. Some synonyms for "effusion of blood" include hemorrhaging, bleeding, haemorrhage, extravasation, hematoma, and contusion. Although these words have slightly different meanings, they all relate to the same medical condition and may be used interchangeably in many cases. Proper use of these synonyms can help to ensure accurate, effective communication between patients and healthcare professionals.