servatio
From LSJ
Latin > English (Lewis & Short)
servātio: ōnis, f. servo,
I an observance: mea perpetua servatio, Ps.-Plin. Ep. 10, 121, 1; Cael. Aur. Acut. 3, 4, 45.
Latin > French (Gaffiot 2016)
servātĭō,¹⁵ ōnis, f. (servo), observation d’une règle : Plin. Min. Ep. 10, 120, 1.