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diaphragm
Definition
In biology, a diaphragm is a muscle in your chest that helps you breathe. It moves up and down when you breathe in and out.
How can the word be used?
The diaphragm is a muscle that helps us breathe.
Different forms of the word
Noun: diaphragm.
Synonym: midriff.
Etymology
The word "diaphragm" comes from the Greek word diaphragma, which means "partition" or "wall". It was first used in English in the 14th century to refer to the muscular partition that separates the chest from the abdomen.
Question
What is a diaphragm?