terra alba

noun

ter·​ra al·​ba

ˌterəˈalbə,

-rəˈȯl-

: any of several white mineral substances: such as

a

: gypsum ground for a pigment

b

: kaolin used especially as an adulterant of paints

c

: burnt alum

d

: magnesia sense 3a

e

: blanc fixe

Word History

Etymology

New Latin, literally, white earth

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