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.