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单词 saltation
释义

WordReference Random House Unabridged Dictionary of American English © 2024
sal•ta•tion  (sal tā′shən),USA pronunciation n. 
  1. a dancing, hopping, or leaping movement.
  2. an abrupt movement or transition.
  3. Geologyintermittent, leaping movement of particles of sand or gravel, as from the force of wind or running water.
  4. Biology, Genetics
    • a sudden discontinuity in a line of descent.
    • a mutation.
  • Latin saltātiōn- (stem of saltātiō) a dancing, equivalent. to saltāt(us) (past participle of saltāre; see saltant) + -iōn- -ion
  • 1640–50
sal•ta′tion•al, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
saltation /sælˈteɪʃən/ n
  1. an abrupt variation in the appearance of an organism, species, etc, usually caused by genetic mutation
  2. the leaping movement of sand or soil particles carried in water or by the wind
  3. a sudden abrupt movement or transition
Etymology: 17th Century: from Latin saltātiō a dance, from saltāre to leap about
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更新时间：2025/2/23 4:38:49