The thick muscular partition that separates your thorax from your abdomen is an example of a diaphragm.
A barrier that fits over the cervix and prevents pregnancy is an example of a diaphragm.
A part of a camera that controls the size of the lens' aperture is an example of a diaphragm.
Origin of diaphragm
- Middle English diafragma from Late Latin diaphragma midriff from Greek partition from diaphrassein to barricade dia- intensive pref. dia– phrassein phrag- to enclose
From American Heritage Dictionary of the English Language, 5th Edition
- From Ancient Greek διάφραγμα (diáphragma, “partition”), from διά (dia, “across”) and φράγμα (phragma, “barrier”), from the verb φράσσω (phrasso)..