per-tŏno, ŭi, 1, v. n. and a., to thunder violently (late Lat.).
Trop.: contra aliquem, to thunder away at any one, Hier. Ep. 53, n. 8: quando vero vox illa pertonuit, id. adv. Helv. 20.
Act., to proclaim aloud, thunder forth, announce: aliquem, Hier. Ep. 61, ad Pammach. 4: gloriam alicujus, Ambros. Serm. Fer. 2, Pentec.