noun
: a hematoma that occurs between the dura mater and arachnoid in the subdural space and that may apply neurologically significant pressure to the cerebral cortex
noun
: a hematoma that occurs between the dura mater and arachnoid in the subdural space and that may apply neurologically significant pressure to the cerebral cortex
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012