WordReference Random House Unabridged Dictionary of American English © 2020
power dive′, [Aeron.]
  1. Aeronauticsa dive, esp. a steep dive, by an aircraft in which the engine or engines are delivering thrust at or near full power.
  • 1925–30

pow•er-dive  (pouər dīv′),USA pronunciation v.t., v.i.,  -dived  or -dove, -dived, -div•ing. [Aeron.]
  1. Aeronauticsto cause to perform or to perform a power dive.
  • 1935–40

Collins Concise English Dictionary © HarperCollins Publishers::
power dive n
  1. a steep dive by an aircraft with its engines at high power
vb power-dive
  1. to cause (an aircraft) to perform a power dive or (of an aircraft) to perform a power dive

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