Extractive Matter is the term applied to the soluble portions of any drug. The substances extracted from the same drug may vary according as the solvent is water, alcohol, ether, &c.; but, so long as the originally insoluble portions are not rendered soluble by the chemical action of the solvent, the term extractive matter is applicable to them.
Extractive Matter
Chambers's Encyclopaedia, Volume 4: Dionysius to Friction, p. 503
Source scan(s): p. 0518