Definition of "spontaneity"

spontaneity

/ˈspɒn.tə.neɪ.ə.ti/

noun
countable and uncountable, plural spontaneities
1. (uncountable) The quality of being spontaneous.
2. (countable) Spontaneous behaviour.
  Quotations
  Romney Leigh, who lives by diagrams, / And crosses out the spontaneities / Of all his individual, personal life / With formal universals.
  1856, Elizabeth Barrett Browning, “Third Book”, in Aurora Leigh, London: Chapman and Hall, […], published 1857
3. (biology) The tendency to undergo change, characteristic of both animal and vegetable organisms, and not restrained or checked by the environment.
4. (biology) The tendency to activity of muscular tissue, including the voluntary muscles, when in a state of healthful vigour and refreshment.