nōnāgēnārĭus — Lewis & Short
nōnāgēnārĭus, a, um, adj.nonageni,
I that contains or consists of ninety.
I In gen.:
nonagenarius motus stellae Martis,ninety degrees distant from the sun, Plin. 2, 15, 12, § 60:
fistula,made of a sheet of lead ninety inches wide, Front. Aquaed. 60.—
II In partic., as subst.: nōnā-gēnārĭus, i, m., a commander of ninety men, Inscr. Orell. 3628; cf. Veg. Mil. 2, 8.—
III Ninety years old, Vulg. Gen. 17, 17.