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

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