diaphragm

n. 横隔膜, (摄影机的)光圈
【化】 隔膜; 膜片; 光阑
【医】 膈; 隔膜; 光阑

副词:diaphragmatically 形容词:diaphragmatic 

di.a.phragm

n.（名词）
Anatomy A muscular membranous partition separating the abdominal and thoracic cavities and functioning in respiration.Also called midriff
【解剖学】 横隔膜：一种分隔胸腔和腹腔并起呼吸作用的肌性膜隔也作 midriff
A membranous part that divides or separates.
隔膜，隔板：一个分开的膜和薄分隔板
A thin disk, especially in a microphone or telephone receiver, that vibrates in response to sound waves to produce electric signals, or that vibrates in response to electric signals to produce sound waves.
膜片，振动板：一种薄的圆盘（尤其是在麦克风和电话收话器里那种）响应声波振动产生信号或者响应电信号振动产生声波
A contraceptive device consisting of a thin flexible disk, usually made of rubber, that is designed to cover the uterine cervix to prevent the entry of sperm during sexual intercourse.
子宫帽避孕套：通常由薄橡皮膜制成的套在子宫颈上的帽，以避免性交过程中精子的进入
A disk having a fixed or variable opening used to restrict the amount of light traversing a lens or optical system.
光圈：具有固定或可变孔的圆盘，用来限制穿过透镜或光学系统的光量

来源：
Middle English diafragma
中古英语 diafragma
from Late Latin diaphragma [midriff]
源自 后期拉丁语 diaphragma [横隔膜]
from Greek [partition]
源自 希腊语 [分割]
from diaphrassein [to barricade]
源自 diaphrassein [设路障]
dia- [intensive pref.] * see dia-
dia- [细致的] *参见 dia-
phrassein phrag- [to enclose]
phrassein phrag- [包围]

【引伸】
di.aphragmat.ic

di.aphragmat.ically
adv.（副词）