O
- Opal
- through French opalle from Latin opalus from Greek ὀπάλλιος opallios, probably ultimately from Sanskrit औपल upalah.
- Orange
- through Old French orenge, Medieval Latin orenge and Italian arancia from Arabic نارنج naranj, via Persian نارنگ narang and Sanskrit नारङ्ग naranga-s meaning "an orange tree", derived from proto-Dravidian.
Read more about this topic: List Of English Words Of Sanskrit Origin