o·ro·tund 
(ôrə-tŭnd′)
(ôrə-tŭnd′)adj.
1. Pompous and bombastic: orotund talk.
2. Full in sound; sonorous: orotund tones.
[From alteration of Latin ōre rotundō, with a round mouth : ōre, ablative of ōs, mouth; see ōs- in the Appendix of Indo-European roots + rotundō, ablative of rotundus, round; see ROTUND.]
o′ro·tundi·ty (ôr′ə-tŭndĭ-tē) n.