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2017 Word of the Year

helical gear

noun
1.
a cylindrical gear wheel whose teeth follow the pitch surface in a helical manner.
Origin of helical gear
1885-1890
First recorded in 1885-90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for helical gear

helical gear

noun
1.
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
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12
14
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