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Etymology edit

tachy- +‎ -tely

Noun edit

tachytely (uncountable)

  1. (biology) Unusually rapid evolution.
    • 1989, Niles Eldredge, Macroevolutionary dynamics: species, niches, and adaptive peaks, page 25:
      Thus tachytely is intimately associated with Simpson's original model of quantum evolution — and quantum evolution is usually, if not solely, implicated in the origin of taxa of relatively high categorical rank []

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