Final answer:
Stained glass is a type of decorative glass that is colored using pigments or metallic oxides fused into it while in a molten state. It is created by fastening colored pieces of glass together to form an image or design. Adding metallic oxides to the molten glass creates different colors and gives stained glass a unique and vibrant appearance.
Step-by-step explanation:
The term for glass that is colored or stained by either having pigments baked onto its surface or by having various metallic oxides fused into it while in a molten state is stained glass. Stained glass is a type of decorative glass consisting of colored pieces fastened together, usually with strips of lead, to form an image or design. The colors in stained glass are created by adding different metallic oxides to the molten glass, which become absorbed and produce a unique and colorful look.