- any of various white, earthy or powdery substances, as pipe clay, gypsum, kaolin, or magnesia.
Origin of terra alba
1870–75; < Latin: white earth
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a white finely powdered form of gypsum, used to make paints, paper, etc
- any of various other white earthy substances, such as kaolin, pipeclay, and magnesia
from Latin, literally: white earth