For the purposes of this part:

(a)-(f) [Reserved]

(g) The term alumina means a suspension in water of precipitated aluminum hydroxide.

(h) The term blanc fixe means a suspension in water of precipitated barium sulfate.

(i) The term gloss white means a suspension in water of co-precipitated aluminum hydroxide and barium sulfate.

(j) The term mixed oxides means the sum of the quantities of aluminum, iron, calcium, and magnesium (in whatever combination they may exist in a coal-tar color) calculated as aluminum trioxide, ferric oxide, calcium oxide, and magnesium oxide.

(k)-(m) [Reserved]

(n) The term externally applied drugs and cosmetics means drugs and cosmetics which are applied only to external parts of the body and not to the lips or any body surface covered by mucous membrane.

(o)-(p) [Reserved]

(q) The definitions and interpretations of terms contained in section 201 of the Federal Food, Drug, and Cosmetic Act shall be applicable also to such terms when used in this part.