dĕcennis — Lewis & Short
dĕcennis, e, adj.id.,
I of ten years (post-Aug.):
bellum, of the Greeks before Troy,Quint. 8, 4, 22;
also proelium,Petr. 89, 2, 8:
obsidio (Veiorum),Flor. 1, 12, 8:
equae,ten years old, Plin. 8, 44, 69; cf.:
decenni major asinus,Pall. Mart. 14, 1.—
II Subst.: decennia, ium, n., = decennalia, a festival under the emperors, held every ten years, Treb. Gall. 5 fin.; cf.: decennalis, no. II.