a. [ L. prodigiosus, fr. prodigium a prodigy; cf. F. prodigieux. See Prodigy. ] [ 1913 Webster ] 1. Of the nature of a prodigy; marvelous; wonderful; portentous. [ Obs. or R. ] Spenser. [ 1913 Webster ] It is prodigious to have thunder in a clear sky. Sir T. Browne. [ 1913 Webster ] 2. Extraordinary in bulk, extent, quantity, or degree; very great; vast; huge; immense; as, a prodigious mountain; a prodigious creature; a prodigious blunder. “Prodigious might.” Milton. [ 1913 Webster ] Syn. -- Huge; enormous; monstrous; portentous; marvelous; amazing; astonishing; extraordinary. [ 1913 Webster ] | 