PRODIG'IOUS, adjective [Latin prodigiosus. See Prodigy.] 1. Very great; huge; enormous in size, quantity, extent, etc.; as a mountain of prodigious size or altitude; a prodigious mass or quantity of water; an ocean or plain of prodigious extent. Hence, 2. Wonderful; astonishing; such as may seem a prodigy; monstrous; portentous. It is prodigious to have thunder in a clear sky. Prodigious to relate.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI