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saltation

[sal-tey-shuh n] /sælˈteɪ ʃən/
noun
1.
a dancing, hopping, or leaping movement.
2.
an abrupt movement or transition.
3.
Geology. intermittent, leaping movement of particles of sand or gravel, as from the force of wind or running water.
4.
Biology.
  1. a sudden discontinuity in a line of descent.
  2. a mutation.
Origin
1640-1650
1640-50; < Latin saltātiōn- (stem of saltātiō) a dancing, equivalent to saltāt(us) (past participle of saltāre; see saltant) + -iōn- -ion
Related forms
saltational, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for saltational

saltation

/sælˈteɪʃən/
noun
1.
(biology) an abrupt variation in the appearance of an organism, species, etc, usually caused by genetic mutation
2.
(geology) the leaping movement of sand or soil particles carried in water or by the wind
3.
a sudden abrupt movement or transition
Word Origin
C17: from Latin saltātiō a dance, from saltāre to leap about
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for saltational

saltation

n.

"a leap, a bound," 1620s, from Latin saltationem (nominative saltatio) "a dancing; dance," noun of action from past participle stem of saltare "to hop, dance," frequentative of salire "to leap" (see salient (adj.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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saltational in Medicine

saltation sal·ta·tion (sāl-tā'shən, sôl-)
n.

  1. The act of leaping, jumping, or dancing.

  2. Discontinuous movement, transition, or development; advancement by leaps as of a disease or physiologic function.

  3. A single mutation that drastically alters the phenotype.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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saltational in Science
saltation
  (sāl-tā'shən, sôl-)   
A single mutation that drastically alters the phenotype.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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