Res fungibiles
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
In the civil law. Fungible things; things of such a nature that they can be replaced by equal quantities and qualities when returning a loan or delivering goods purchased, for example, so many bushels of wheat or so many dollars; but a particular horse or a particular jewel would not be of this character.
Defined under Res in Black's Law Dictionary.