[ˈkɑːdɪak], (Adjective)

Definitions:
- relating to the heart

- relating to the part of the stomach nearest the oesophagus


Phrases:

Origin:
late Middle English (as a noun denoting heart disease): from French cardiaque or Latin cardiacus, from Greek kardiakos, from kardia ‘heart or upper opening of the stomach’. The adjective dates from the early 17th century

[ˈkɑːdɪak], (Noun)

Definitions:
- a person with heart disease
(e.g: some medical patients, such as cardiacs, need rest and quiet)

- a heart attack
(e.g: I thought I was going to have a cardiac when the water hit me)


Phrases:

Origin:
late Middle English (as a noun denoting heart disease): from French cardiaque or Latin cardiacus, from Greek kardiakos, from kardia ‘heart or upper opening of the stomach’. The adjective dates from the early 17th century