Lewis Short
Nĭgĭdĭus | Nĭgĭdĭānus, a, um (noun M) : :
* P. Nigidius Figulus,a celebrated Roman scholar, a contemporary of Cicero and Caesar, the composer of several grammatical works,Gell. 19, 14, 1; cf. id. 4, 9, 1 sqq.—Hence
* Adj., of Nigidius: commentationes,Gell. 18, 4, 11; 19, 14, 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary