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anatomy 解剖学 the layer of muscle between the lungs and the stomach, used especially to control breathing 膈；膈膜；横膈膜 - (British English also cap)
a rubber or plastic device that a woman places inside her vagina before having sex to prevent sperm from entering the womb and making her pregnant 子宫帽（避孕用具） any thin piece of material used to separate the parts of a machine, etc. （机器等的）隔膜，隔板 - (specialist)
a thin disc used to turn electronic signals into sound and sound into electronic signals in phones, loudspeakers, etc. （电话机、扬声器等的）膜片，膜件，振动膜
Word Originlate Middle English: from late Latin diaphragma, from Greek, from dia ‘through, apart’ + phragma ‘a fence’.