Saltatory evolution
Saltatory Sal"ta*to"ry, a. [L. saltatorius. See {Saltant}, and cf. {Saltire}.] Leaping or dancing; having the power of, or used in, leaping or dancing. [1913 Webster]

{Saltatory evolution} (Biol.), a theory of evolution which holds that the transmutation of species is not always gradual, but that there may come sudden and marked variations. See {Saltation}.

{Saltatory spasm} (Med.), an affection in which pressure of the foot on a floor causes the patient to spring into the air, so as to make repeated involuntary motions of hopping and jumping. --J. Ross. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • saltatory evolution — evolution showing sudden changes; mutation or saltation …   Medical dictionary

  • saltatory evolution — noun : evolution by sudden variation or by periods of active variation with intervening inactive periods : macroevolution compare saltation 3a …   Useful english dictionary

  • saltatory evolution — sudden development; mutation, saltation (Biology) …   English contemporary dictionary

  • Evolution —     Evolution (History and Scientific Foundation)     † Catholic Encyclopedia ► Evolution (History and Scientific Foundation)     The world of organisms comprises a great system of individual forms generally classified according to structural… …   Catholic encyclopedia

  • Saltatory — Sal ta*to ry, a. [L. saltatorius. See {Saltant}, and cf. {Saltire}.] Leaping or dancing; having the power of, or used in, leaping or dancing. [1913 Webster] {Saltatory evolution} (Biol.), a theory of evolution which holds that the transmutation… …   The Collaborative International Dictionary of English

  • Saltatory spasm — Saltatory Sal ta*to ry, a. [L. saltatorius. See {Saltant}, and cf. {Saltire}.] Leaping or dancing; having the power of, or used in, leaping or dancing. [1913 Webster] {Saltatory evolution} (Biol.), a theory of evolution which holds that the… …   The Collaborative International Dictionary of English

  • saltatory — Pertaining to, or characterized by, saltation. * * * sal·ta·to·ry sal tə .tōr ē, sȯl , .tȯr adj proceeding by leaps rather than by gradual transitions <saltatory conduction of impulses in myelinated nerve fibers> * * * sal·ta·to·ry… …   Medical dictionary

  • Evolution — The continuing process of change, especially in reference to natural selection. Charles Darwin (1809 82) noted that successful species produce more offspring in each generation than are needed to replace the adults who die. Not all offspring… …   Medical dictionary

  • History of zoology (1859–1912) — This article considers the history of zoology in the years up to 1912, since the theory of evolution by natural selection proposed by Charles Darwin in 1859.Charles Darwin gave new direction to morphology and physiology, by uniting them in a… …   Wikipedia

  • Senecio vulgaris — Common groundsel Scientific classification Kingdom: Plantae …   Wikipedia

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