altĭtŏnans, antis, adj. [alte-tonans],
thundering from on high : Juppiter, Enn. Ann. 2, 6: pater altitonans, i. e. Jupiter , Cic. Carm. Div. 1, 12, 19.—Hence, in gen., of wind, loud-roaring : Volturnus, * Lucr. 5, 745.
altitonāns ntis, adj.alte + tonans, high-thundering : pater, i. e. Jupiter. ...
An Elementary Latin Dictionary