Lewis Short
dēcoctĭo (noun F) : decoquo (postclass.)
* A boiling down.
* Prop.
* Abstr.: lentisci hoc modo,Cael. Aur. Tard. 2, 13, 165.
* Trop., of an association, a decoction, mixture: unius decoctioni universi respondere cogentur,Cod. Just. 11, 9, 5; cf. Cod. Theod. 4, 9, 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary