Definition of natural causes in English:

natural causes

noun

  • 1Nature regarded as a (manifold) source of causation; the regular and predictable causes of a thing.

  • 2Old age or disease as causes of death, as distinguished from accident, murder, etc.

Origin

Mid 16th century; earliest use found in Image of Idlenesse. From natural + the plural of cause.

Pronunciation

natural causes

/ˌnatʃ(ə)rəl ˈkɔːzɪz//ˌnatʃ(ə)r(ə)l ˈkɔːzɪz/