DictionaryhumorBodily fluid
noun

humor

A bodily fluid, especially one formerly believed to govern health and temperament.

Ancient medical theory links each humor to a particular temperament.

Etymology

Latin humor means moisture or liquid. Older medicine used the word for the bodily fluids whose balance was believed to determine health and temperament.

More examples

  • Blood is one of the four humors in ancient medicine.
  • The aqueous humor helps maintain pressure inside the eye.
  • Early physicians blamed illness on an imbalance of the humors.

Forms

humor · humors

humoral adjective — Relating to bodily fluids or humors.

Similar words

fluid
Fluid is broader and need not occur inside the body.