decubitus
/dɪˈkjuːbɪtəs/noun
mass noun
- chiefly Medicine the posture adopted by a person who is lying down【主医】卧姿, 卧位：
as modifier lumbar puncture with the patient in the lateral decubitus position.为侧卧病人进行的腰椎穿刺。
词源
late 19th cent.: modern Latin， from Latin decumbere 'lie down'， on the pattern of words such as accubitus 'reclining at table'.