helicopteronEtymologyFrom Ancient Greek ἕλῐξ (hélĭx, “spiral”) + πτερόν (pterón, “wing”). Doublet of helicopter.helicopteron means A flying machine having an aerial screw propeller. Lexicurio rates it Rare gem — a strength score of 78 out of 100.nounA flying machine having an aerial screw propeller.“But though many of these projects called forth considerable inventive ability, yet, until quite recently, the helicopteron (from ἑλικός, any thing spiral or twisted, and πτερόν, a wing—that is, a machine furnished with an aërial screw-propeller) was the only type of machine which had succeeded in raising itself in flight. Several of these helicopterons have been constructed since 1784, at which da”