"Form of Infinity"
The name Infiniti is commonly a female name from the "American" origin.
Infiniti is a respelling of the English noun infinity, with the final y replaced by i. The word goes back to Latin infinitas, meaning boundlessness or endlessness. The spelling with a final i also matches that of the Nissan luxury car marque Infiniti, which was launched in North America in 1989.
Infinity means "Endless".
The pronunciation of Infiniti is in-FIN-ih-tee.