4. (Min.)

Defn: The appearance of the surface of a mineral as affected by, or dependent upon, peculiarities of its reflecting qualities.

Note: The principal kinds of luster recognized are: metallic, adamantine, vitreous, resinous, greasy, pearly, and silky. With respect to intensity, luster is characterized as splendent, shining, glistening, glimmering, and dull.

5. A substance which imparts luster to a surface, as plumbago and some of the glazes.

6. A fabric of wool and cotton with a lustrous surface, — used for women's dresses. Luster ware, earthenware decorated by applying to the glazing metallic oxides, which acquire brilliancy in the process of baking.

LUSTER; LUSTRE
Lus"ter, Lus"tre, v. t. [imp. & p. p. Lustred; p. pr. & vb. n.
Lustering, or Lustring.]

Defn: To make lustrous. [R. & Poetic]
Flooded and lustered with her loosened gold. Lowell.

LUSTERING
Lus"ter*ing, n.

1. The act or process of imparting a luster, as to pottery.

2. The brightening of a metal in the crucible when it becomes pure, as in certain refining processes.