noun ·3 syllables ·Rare ·Advanced level

Definitions

Noun

1. 1
   A kind of VTOL aircraft with a helicopter rotor-like system driven by its engine for takeoff and landing, as well as one or more conventional propellers to provide forward thrust during cruising flight

Etymology

From gyro- + -dyne.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.