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helical gear

American

noun

a cylindrical gear wheel whose teeth follow the pitch surface in a helical manner.

helical gear British

noun

a cylindrical gearwheel having the tooth form generated on a helical path about the axis of the wheel

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of helical gear

First recorded in 1885–90

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023