Meaning of HELICAL in English

HELICAL

I. ˈhelə̇kəl, -lēk- also ˈhēl- adjective

Etymology: helic- + -al

1. : of, relating to, or having the form of a helix ; broadly : spiral 1a

the helical thread of a bolt

metal tubing with annular or helical fins

2. : having the angle of a helix formed about the pitch cylinder rather than being straight and parallel to the axis (as of a gear or milling cutter)

helical teeth

gears cut in a helical rather than a spur shape for smoother operation

II. noun

( -s )

: something helical in form (as a coil extension spring)

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.