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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Borrowed from French hélicoptère, from Ancient Greek ἕλιξ (hélix, “spiral”) + πτερόν (pterón, “wing”). Doublet of helicopteron. By surface analysis, helico- + -pter. The dragonfly sense is from a dragonfly's ability to hover and fly in any direction, like the flying machine.
chopper, whirlybird, eggbeater
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Classic usage
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