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Webster 1913 Edition

(? or ?)

Noun.

(Chem.)

A nitrogenous base homologous with pyridine, obtained from coal tar as an oily liquid,

C11H17N

; also, any one of the group od metameric compounds of which rubidine is the type.

rubidine ‎(uncountable)

(organic chemistry) A nitrogenous base homologous with pyridine, obtained from coal tar as an oily liquid, C₁₁H₁₇N.
(organic chemistry) Any metameric compound in the same group as the above.