Definition of spontaneous

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Spontaneous (a.) Proceeding from, or acting by, internal impulse, energy, or natural law, without external force; as, spontaneous motion; spontaneous growth..

Lern More About Spontaneous

Duplicate :: Duplicate (v. t.) To divide into two by natural growth or spontaneous action; as, infusoria duplicate themselves..
Naturally :: Naturally (adv.) In a natural manner or way; according to the usual course of things; spontaneously.
Alkarsin :: Alkarsin (n.) A spontaneously inflammable liquid, having a repulsive odor, and consisting of cacodyl and its oxidation products; -- called also Cadel's fuming liquid..
Voluntarily :: Voluntarily (adv.) In a voluntary manner; of one's own will; spontaneously.
Panspermy :: Panspermy (n.) The doctrine that all organisms must come from living parents; biogenesis; -- the opposite of spontaneous generation.
Pyrophorus :: Pyrophorus (n.) Any one of several substances or mixtures which phosphoresce or ignite spontaneously on exposure to air, as a heated mixture of alum, potash, and charcoal, or a mixture of charcoal and finely divided lead..
Accord :: Accord (v. t.) Voluntary or spontaneous motion or impulse to act; -- preceded by own; as, of one's own accord..
Voluntariness :: Voluntariness (n.) The quality or state of being voluntary; spontaneousness; specifically, the quality or state of being free in the exercise of one's will..
Diatom :: Diatom (n.) One of the Diatomaceae, a family of minute unicellular Algae having a siliceous covering of great delicacy, each individual multiplying by spontaneous division. By some authors diatoms are called Bacillariae, but this word is not in general use..
Fissiparous :: Fissiparous (a.) Reproducing by spontaneous fission. See Fission.
Vinegar :: Vinegar (a.) A sour liquid used as a condiment, or as a preservative, and obtained by the spontaneous (acetous) fermentation, or by the artificial oxidation, of wine, cider, beer, or the like..
Fission :: Fission (n.) A process by which certain coral polyps, echinoderms, annelids, etc., spontaneously subdivide, each individual thus forming two or more new ones. See Strobilation..
Break :: Break (v. i.) To open spontaneously, or by pressure from within, as a bubble, a tumor, a seed vessel, a bag..
Mobile :: Mobile (a.) Capable of being moved, aroused, or excited; capable of spontaneous movement..
Adventitious :: Adventitious (a.) Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; -- applied to foreign plants.
Archegony :: Archegony (n.) Spontaneous generation; abiogenesis.
Abiogenesis :: Abiogenesis (n.) The supposed origination of living organisms from lifeless matter; such genesis as does not involve the action of living parents; spontaneous generation; -- called also abiogeny, and opposed to biogenesis..
Automaton :: Automaton (v. i.) Any thing or being regarded as having the power of spontaneous motion or action.
Hemicarp :: Hemicarp (n.) One portion of a fruit that spontaneously divides into halves.
Fissiparism :: Fissiparism (n.) Reproduction by spontaneous fission.
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