The story
from Gr. ψιλός (naked, smooth, bald) and μέλας (black)
Etymology from Wiktionary, CC BY-SA 4.0.
psilomelane
Today it means: Any hard, black hydrous manganese oxide with variable amounts of barium and potassium. Full definition →
Today it means: Any hard, black hydrous manganese oxide with variable amounts of barium and potassium. Full definition →
from Gr. ψιλός (naked, smooth, bald) and μέλας (black)
Etymology from Wiktionary, CC BY-SA 4.0.