( n. )
A liquid base, C/H/N, of the pyridine group, found in coal tar; also, any one of the series of isometric substances of which it is the type.
( n. )
A liquid base, C/H/N, of the pyridine group, found in coal tar; also, any one of the series of isometric substances of which it is the type.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012