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adjustable-pitch

[uh-juhs-tuh-buh l-pich]
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adjective
  1. (of a marine or aircraft propeller) having blades whose pitch can be changed while the propeller is stationary, chiefly to suit various conditions of navigation or flight.

Origin of adjustable-pitch

First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018