The meaning of DIAPHRAGM is a body partition of muscle and connective tissue; specifically : the partition separating the chest and abdominal cavities in mammals.

The diaphragm is a muscle. It sits under your lungs and helps you breathe. Diaphragm problems can result from many injuries, diseases and conditions.

An optical device in a camera or telescope that regulates the amount of light that enters the lens or optical system. The diaphragm consists of a disk with a circular opening of variable diameter.

Dec 7, 2025 · The diaphragm is a dome-shaped muscle separating the chest from the abdomen. It is the main muscle used for breathing and is involved in other functions.

Jul 30, 2018 · The diaphragm is a thin skeletal muscle that sits at the base of the chest and separates the abdomen from the chest. It contracts and flattens when you inhale.

Your diaphragm is a muscle between your lungs and your stomach. It is used when you breathe.

DIAPHRAGM definition: 1. the muscle that separates the chest from the lower part of the body 2. a circular rubber device…. Learn more.

1. a wall of muscle and connective tissue separating two cavities, esp. the partition separating the thoracic cavity from the abdominal cavity in mammals. 2. a. a porous plate separating two liquids.

Definition of diaphragm noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Feb 21, 2026 · Diaphragm, dome-shaped, muscular and membranous structure that separates the thoracic and abdominal cavities in mammals; it is the principal muscle of respiration.