BETULIN

Bet"u*lin, n. Etym: [L. betula birch tree.] (Chem.)

Definition: A substance of a resinous nature, obtained from the outer bark of the common European birch (Betula alba), or from the tar prepared therefrom; -- called also birch camphor. Watts.

Source: Webster’s Unabridged Dictionary 1913 Edition

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