Particulate

Particulate means any material, except uncombined water, that exists as liquid or solid particles such as dust, smoke, mist, or fumes at standard conditions (760 millimeters of mercury, 0 degrees celsius).

Source

40 CFR § 63.702

Scoping language

All terms used in this subpart that are not defined below have the meaning given to them in the Clean Air Act and in subpart A of this part.