mineral spirits
noun
1.
a volatile distillation product of petroleum, used as a thinner for paints and varnishes.
Compare
naphtha
(def 1).
Origin
1885-90
Examples from the web for
mineral spirits
Both ingredients are flammable and toxic, although
mineral spirits
are of a lower toxicity.
Contemporary definitions for
mineral spirits
noun
a refined distillate of petroleum used as a paint thinner; also called
white spirits