noun. muscles between the ribs; they contract during inspiration.
- skeletal muscle
- musculus intercostalis
- intercostal muscle
Example sentences of the word intercostal
Locate the fourth intercostal space, between the fourth and fifth ribs on the front of the subject’s chest.
2. Noun, singular or mass
During exhalation, the intercostal and abdominal muscles work together to force air out, expelling carbon dioxide.