'titaness' originates from Greek, specifically the word 'Τιτανίς', where 'Τιτάν' meant 'Titan' and '-ίς' is a feminine suffix.

'Τιτανίς' transformed into the Latin word 'Titanissa,' and eventually became the modern English word 'titaness' through Old French.

Initially, it meant 'female Titan,' and this meaning has largely remained the same in modern usage.