Spontaneous
adjective
1.
coming or resulting from a natural impulse or tendency; without effort or premeditation; natural and unconstrained; unplanned:
a spontaneous burst of applause.
2.
(of a person) given to acting upon sudden impulses.
3.
(of natural phenomena) arising from internal forces or causes; independent of external agencies; self-acting.
4.
growing naturally or without cultivation, as plants and fruits; indigenous.
5.
produced by natural process.
adjective
1.
occurring, produced, or performed through natural processes without external influence: spontaneous movement
2.
arising from an unforced personal impulse; voluntary; unpremeditated: a spontaneous comment
3.
(of plants) growing naturally; indigenous
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- Spontaneous amputation
spontaneous amputation n. Congenital amputation. Amputation resulting from a pathological process rather than from trauma.
- Spontaneous-combustion
noun 1. the ignition of a substance or body from the rapid oxidation of its own constituents without heat from any external source. spontaneous combustion noun 1. the ignition of a substance or body as a result of internal oxidation processes, without the application of an external source of heat, occurring in finely powdered ores, […]
- Spontaneous gangrene of newborn
spontaneous gangrene of newborn n. Gangrene due to vascular occlusion of unknown cause, usually in marasmic or dehydrated infants.
- Spontaneous-generation
noun, Biology. 1. abiogenesis. spontaneous generation noun 1. a theory, widely held in the 19th century and earlier but now discredited, stating that living organisms could arise directly and rapidly from nonliving material Also called abiogenesis spontaneous generation The supposed development of living organisms from nonliving matter, as maggots from rotting meat. The theory of […]