
Saltation -- Noun. 1a. the action or process of leaping or jumping. b. dance. 2. the origin of a new species or a higher taxon in essentially a single evolutionary step. "Jerboas are specialised for saltation, or leaping...[and] can cover about 3 m[eters] in a single leap. Darren Naish, Scientific American, October 3, 2017
Did You Know? Saltation comes from Latin, deriving ultimately from the verb salire, meaning "to leap." Etymologists think it meant "leap" or "jump" when it was first used in English, too, but documented evidence of early use in that sense is scarce. Instead, the oldest manuscripts containing the word show it used as a synonym of dancing. One of the first recorded incidences of the "leaping" sense occurred when British physician and author Sir Thomas Browne (1605-1682) used it in an entomological context: "Locusts...being ordained for saltation, their hinder legs doe (not a spelling error) far exceed the other." The word made the leap to evolutionary theory in the late 19th century.
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