dust-free en · ADJ
Etymology
From dust + -free.
Meanings
-
(alt-of, alternative, not-comparable) Alternative form of dustfree.
alt of dustfree
Injector testing under pressure has never presented any difficulty. It is carried out in a small, dust-free cubicle fitted with an extractor fan and the meter calibration is checked annually.
1962 October, M. J. Wilson, “Three years of dieselisation at Devons Road depot”, in Modern Railways, page 264: