Chem. Also 9 eupion. [a. Gr. εὐπίων very fat, f. εὐ- (see EU-) + πίων fat; later assimilated to derivatives in -ONE.] A volatile, oily liquid obtained by the distillation of wood, tar, etc.
1838. T. Thomson, Chem. Org. Bodies, 701. Eupion is a colourless limpid liquid.
c. 1865. J. Wylde, Circ. Sc., I. 420/2. Eupione is another product of wood-tar.
1873. Watts, Fownes’ Chem., 549. The liquid compounds of the paraffin series, known in commerce as paraffin oil, photogene, solar oil, cupione, &c. Ibid. (1882), Dict. Chem., II. 608.
