spontaneous : Idioms & Phrases


spontaneous abortion

  • noun a natural loss of the products of conception
    miscarriage; stillbirth.
WordNet

Spontaneous combustion

  • noun ignition of a substance (as oily rags) resulting from an internal oxidation process
WordNet
  • combustion produced in a substance by the evolution of heat through the chemical action of its own elements; as, the spontaneous combustion of waste matter saturated with oil.
Webster 1913

Spontaneous generation

  • noun a hypothetical organic phenomenon by which living organisms are created from nonliving matter
    abiogenesis; autogeny; autogenesis.
WordNet
  • . (Biol.) See under Generation.
Webster 1913