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Firmĭānus, a, um, v. Firmius.
Firmĭus, ii, m., a Roman proper name, e. g. Firmius Catus, Tac. A. 2, 27; 4, 31.
Hence, Firmĭānus, a, um, adj., of Firmius, an unknown silver-worker of that name: Firmiana vasa, Plin. 33, 11, 49, § 139 (Jan. Furniana).