seeing · verb, adjective, noun1
- Proto-Indo-European*sekʷ-
- Proto-Germanic*sehwaną
- Proto-West Germanic*sehwan
- Old Englishsēon
- Middle Englishseen
- Englishsee
- English todayseeing
seeing · conjunction2
Probably an elision of "seeing that" or "seeing as".
Etymology from Wiktionary, CC BY-SA 4.0.