- impervious to or free of dust.
Origin of dustproof
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for dustproof
The bearings and cams of such a shaft are generally enclosed in oil and dustproof casing screwed to the top of the cylinders.The Gasoline Motor
Harold Whiting Slauson
After bridling, drop a little oil paint into the heel of the brush and set it away in a dustproof compartment for a few days.Practical Carriage and Wagon Painting
Mayton Clarence Hillick