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Dictionary Results for spontaneous generation: | ||
1. WordNet® 3.0 (2006) | ||
spontaneous generation n 1: a hypothetical organic phenomenon by which living organisms are created from nonliving matter [syn: abiogenesis, autogenesis, autogeny, spontaneous generation] | ||
2. The Collaborative International Dictionary of English v.0.48 | ||
Generation \Gen`er*a"tion\, n. [OE. generacioun, F. g['e]n['e]ration, fr.L. generatio.] 1. The act of generating or begetting; procreation, as of animals. [1913 Webster] 2. Origination by some process, mathematical, chemical, or vital; production; formation; as, the generation of sounds, of gases, of curves, etc. [1913 Webster] 3. That which is generated or brought forth; progeny; offspiring. [1913 Webster] 4. A single step or stage in the succession of natural descent; a rank or remove in genealogy. Hence: The body of those who are of the same genealogical rank or remove from an ancestor; the mass of beings living at one period; also, the average lifetime of man, or the ordinary period of time at which one rank follows another, or father is succeeded by child, usually assumed to be one third of a century; an age. [1913 Webster] This is the book of the generations of Adam. --Gen. v. 1. [1913 Webster] Ye shall remain there [in Babylon] many years, and for a long season, namely, seven generations. --Baruch vi. 3. [1913 Webster] All generations and ages of the Christian church. --Hooker. [1913 Webster] 5. Race; kind; family; breed; stock. [1913 Webster] Thy mother's of my generation; what's she, if I be a dog? --Shak. [1913 Webster] 6. (Geom.) The formation or production of any geometrical magnitude, as a line, a surface, a solid, by the motion, in accordance with a mathematical law, of a point or a magnitude; as, the generation of a line or curve by the motion of a point, of a surface by a line, a sphere by a semicircle, etc. [1913 Webster] 7. (Biol.) The aggregate of the functions and phenomene which attend reproduction. [1913 Webster] Note: There are four modes of generation in the animal kingdom: scissiparity or by fissiparous generation, gemmiparity or by budding, germiparity or by germs, and oviparity or by ova. [1913 Webster] Alternate generation (Biol.), alternation of sexual with asexual generation, in which the products of one process differ from those of the other, -- a form of reproduction common both to animal and vegetable organisms. In the simplest form, the organism arising from sexual generation produces offspiring unlike itself, agamogenetically. These, however, in time acquire reproductive organs, and from their impregnated germs the original parent form is reproduced. In more complicated cases, the first series of organisms produced agamogenetically may give rise to others by a like process, and these in turn to still other generations. Ultimately, however, a generation is formed which develops sexual organs, and the original form is reproduced. Spontaneous generation (Biol.), the fancied production of living organisms without previously existing parents from inorganic matter, or from decomposing organic matter, a notion which at one time had many supporters; abiogenesis. [1913 Webster] | ||
3. The Collaborative International Dictionary of English v.0.48 | ||
Spontaneous \Spon*ta"ne*ous\ (sp[o^]n*t[=a]"n[-e]*[u^]s), a. [L. spontaneus, fr. sponte of free will, voluntarily.] 1. Proceeding from natural feeling, temperament, or disposition, or from a native internal proneness, readiness, or tendency, without constraint; as, a spontaneous gift or proposition. [1913 Webster] 2. Proceeding from, or acting by, internal impulse, energy, or natural law, without external force; as, spontaneous motion; spontaneous growth. [1913 Webster] 3. Produced without being planted, or without human labor; as, a spontaneous growth of wood. [1913 Webster] 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. (Biol.) See under Generation. [1913 Webster] Syn: Voluntary; uncompelled; willing. Usage: Spontaneous, Voluntary. What is voluntary is the result of a volition, or act of choice; it therefore implies some degree of consideration, and may be the result of mere reason without excited feeling. What is spontaneous springs wholly from feeling, or a sudden impulse which admits of no reflection; as, a spontaneous burst of applause. Hence, the term is also applied to things inanimate when they are produced without the determinate purpose or care of man. "Abstinence which is but voluntary fasting, and . . . exercise which is but voluntary labor." --J. Seed. [1913 Webster] Spontaneous joys, where nature has its play, The soul adopts, and owns their firstborn away. --Goldsmith. [1913 Webster] -- Spon*ta"ne*ous*ly, adv. -- Spon*ta"ne*ous*ness, n. [1913 Webster] | ||
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