DictionaryRoot: helix
Greek
helix
spiral
1 / 1
noun / verb
helicopter
HEL-ih-kahp-ter/ˈhelɪkɑːptər/
An aircraft capable of hovering through rotating overhead blades.
Etymology
The “spiral wing” name originally described a proposed flying machine that would gain lift from spiral aerofoils. It was later transferred to aircraft lifted by rotating blades.