'Judaic' originates from Latin, specifically the word 'Judaicus,' where 'Judae-' referred to 'Judea' and '-icus' was a suffix meaning 'pertaining to.'

'Judaicus' transformed into the Old French word 'judaïque,' and eventually became the modern English word 'Judaic' through Middle English.

Initially, it meant 'pertaining to Judea or the Jews,' and this meaning has largely remained the same in modern usage.