硬こう膜まく下か血けっ腫しゅMeaningsNoun1. subdural hematoma; subdural hemorrhage; subdural haemorrhageKanji used硬hard like a rock膜membrane下below血blood腫become swollenComposed of硬こうhardnessNoun膜まくmembrane; filmNoun下かunder (influence, control, conditions, etc. of); during (war, occupation, etc.)Suffix血けっ腫しゅhematoma; haematomaNoun