Definition of Galalith in English:

Galalith

Pronunciation /ˈɡaləlɪθ/

noun

historical
  • A plastic made from casein by treatment with formaldehyde, often used as a substitute for tortoiseshell, horn, etc.

Origin

Early 20th century; earliest use found in The Trade Marks Journal. From German Galalith from ancient Greek γάλα milk + λίθος stone.