tertiatio

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

tertĭātĭo, ōnis, f. [tertiatus],

a doing a thing the third time; concr., that which is produced by a third operation : miscere tertiationem cum primā pressurā, the oil produced by the third pressure , Col. 12, 52, 11.