Webster's Revised Unabridged Dictionary · 1913

Metalline

Metalline , adjective

[Compare French métallin.]

(a)
(Chemistry) Pertaining to, or resembling, a metal; metallic; as, metalline properties.
(b)
(Chemistry) Impregnated with metallic salts; chalybeate; as, metalline water. [Rare]

Metalline (? o?) , noun

(Chemistry) A substance of variable composition, but resembling a soft, dark-colored metal, used in the bearings of machines for obviating friction, and as a substitute for lubricants.