'titan' originates from Greek, specifically the word 'Τιτάν', where 'Τιτάν' referred to the giant deities in Greek mythology.

'Τιτάν' transformed into the Latin word 'Titan', and eventually became the modern English word 'titan'.

Initially, it referred to the giant deities in Greek mythology, but over time it evolved to mean a person or thing of great size or power.