- Original: κῆτος - Transliteration: Ketos - Phonetic: kay'-tos - Definition: 1. a sea monster, whale, huge fish - Origin: probably from the base of G5490 - TDNT entry: None - Part(s) of speech: Noun Neuter - Strong's: Probably from the base of G5490 ; a huge fish (as gaping for prey): - whale.