autorotational
|au-to-ro-ta-tion-al|
🇺🇸
/ˌɔːtəroʊˈteɪʃənəl/
🇬🇧
/ˌɔːtəʊrəˈteɪʃənəl/
self-driven rotation
Etymology
'autorotational' originates from modern English formation, specifically from the noun 'autorotation' plus the adjectival suffix '-al', where the prefix 'auto-' derives from Greek 'autos' meaning 'self' and 'rotation' derives from Latin 'rotatio' (from 'rotare') meaning 'a turning'.
'autorotational' changed from the noun 'autorotation' (early 20th century, aviation usage) combined with the suffix '-al' and eventually became the modern English adjective 'autorotational'.
Initially it meant 'pertaining to self-rotation' in a general sense, but over time it evolved to be used specifically for 'pertaining to the autorotation of rotorcraft' in aviation contexts.
Meanings by Part of Speech
Adjective 1
relating to or characteristic of autorotation — the condition in which rotor blades (or similar lifting surfaces) rotate due to aerodynamic forces rather than engine power, especially in rotorcraft.
The engineer studied the autorotational characteristics of the helicopter's rotor system.
Synonyms
Antonyms
Last updated: 2025/11/28 11:07