Chem. An early variant of CAPROIC.

1

1859.  Todd, Cycl. Anat., V. 392/1. A variety of volatile fatty acids … known under the names of … caprylic, capronic, capric and vaccinic acids.

2

c. 1865.  J. Wylde, in Circ. Sc., I. 333/2.

3