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Definition of Spontaneous
1. Adjective. Happening or arising without apparent external cause. "A spontaneous abortion"
Similar to: Impulsive, Unprompted, Intuitive, Instinctive, Natural
Antonyms: Induced
Derivative terms: Spontaneity
2. Adjective. Said or done without having been planned or written in advance. "He made a few ad-lib remarks"
Definition of Spontaneous
1. a. Proceding from natural feeling, temperament, or disposition, or from a native internal proneness, readiness, or tendency, without constraint; as, a spontaneous gift or proportion.
Definition of Spontaneous
1. Adjective. Self generated; happening without any apparent external cause. ¹
2. Adjective. Done by one's own free choice, or without planning. ¹
3. Adjective. proceeding from natural feeling or native tendency without external constraint ¹
4. Adjective. arising from a momentary impulse ¹
5. Adjective. controlled and directed internally : self-active : spontaneous movement characteristic of living things ¹
6. Adjective. produced without being planted or without human labor : indigenous ¹
7. Adjective. not apparently contrived or manipulated : natural ¹
8. Adjective. Random. ¹
9. Adjective. Sudden, without warning. ¹
¹ Source: wiktionary.com
Definition of Spontaneous
1. [adj]
Medical Definition of Spontaneous
1.
1. Proceding from natural feeling, temperament, or disposition, or from a native internal proneness, readiness, or tendency, without constraint; as, a spontaneous gift or proportion.
2. Proceeding from, or acting by, internal impulse, energy, or natural law, without external force; as, spontaneous motion; spontaneous growth.
3. Produced without being planted, or without human labour; as, a spontaneous growth of wood. Spontaneous combustion, 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. Spontaneous generation.
Lexicographical Neighbors of Spontaneous
Literary usage of Spontaneous
Below you will find example usage of this term as found in modern and/or classical literature:
1. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1916)
"Immune Reactions against Tumor Growth in Animals with Spontaneous Tumor.—"While
the conditions determining the growth of tumors in experimentally inoculated ..."
2. Surgery, Gynecology & Obstetrics by The American College of Surgeons, Franklin H. Martin Memorial Foundation (1913)
"Two of the tumors used for inoculation of mice with spontaneous tumors were
inoculated ... For these experiments we used 55 mice bearing spontaneous tumors. ..."
3. Monographic Medicine by William Robie Patten Emerson, Guido Guerrini, William Brown, Wendell Christopher Phillips, John Whitridge Williams, John Appleton Swett, Hans Günther, Mario Mariotti, Hugh Grant Rowell (1916)
"(1) Disturbances of Spontaneous Speech Under spontaneous speech we ... In spontaneous
conversation the quantity of speech movements made should be noted. ..."
4. All the Year Round by Charles Dickens (1873)
"He contended in addition that spontaneous combustion alone could satisfactorily
explain the ... The whole profession blazed up at thie, and the spontaneous ..."
5. The Montessori Method by Maria Montessori (1912)
"The directress wished to interfere to release me, but I signed to her to be quiet,
and I myself did not move, but remained silent, admiring this spontaneous ..."