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Definition for back-clearance (2 of 2)
[ ruhn-out ]
/ ˈrʌnˌaʊt /
- the gradual termination of a groove on the body of an object not ending there, as the upper termination of a flute in a twist drill.
- Also called back clearance. a space in a depressed area of an object into which a machine tool or grinding wheel may safely enter at the end of a pass or operation.
the merging of a curved surface into another surface.
an act or instance of running away so as to evade, abandon, or avoid something.
a person who runs away so as to avoid payment or duty.
an act or instance of expiring or becoming depleted: the runout of a union contract; a runout in office supplies.
uneven wear on the outer edges of a tire or on the rim of a wheel.
Origin of runout
First recorded in 1925–30; noun use of verb phrase run out
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019