noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Rotation in a contrary direction. uncountable
2. 2
   The use of a single piston or turboprop engine to drive two propellers in opposite rotation. uncountable

Etymology

From contra- + rotation.

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