Definition of contra-rotating in English:

contra-rotating

Line breaks: contra-rotating
Pronunciation: /kɒntrərəʊˈteɪtɪŋ
 
/

adjective

Rotating in the opposite direction or in opposite directions, especially about the same shaft.
More example sentences
  • The valves are actuated via drag arms from twin, contra-rotating camshafts.
  • However, most designs still had two or more contra-rotating blades to solve the torque problem and this caused highly complex and unsound craft.
  • Another benefit was that the contra-rotating propellers eliminated torque.

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Pronunciation: ˌɪntəˈniːsʌɪn
adjective
destructive to both sides in a conflict