screw thread

noun
1.
Also called worm. the helical ridge of a screw.
2.
a full turn of the helical ridge of a screw.

Origin:
1805–15

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
screw thread
 
n
the helical ridge on a screw formed by a die or lathe tool

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Specifically defined screw thread used on fire hose couplings.
The specific dimensions of screw thread employed to coupled fire hose and equipment.
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