colossiaeus

cŏlossēus ( -ossiaeus, Plin. 36, 5, 4, § 26), a, um, adj., = kolossiaios, colossal, huge, gigantic (post-Aug. prose):

statuae,

Plin. 34, 7, 18, § 39; cf. id. 36, 5, 4, § 26; Suet. Vesp. 23:

colosseum se pingi Nero jussit,

Plin. 35, 7, 33, § 51.