Family name origins & meanings
- Japanese (Senoo) : habitational name from Senoo-mura in Bitchū (now part of Okayama prefecture). It is pronounced Seo farther west in Japan.
- Filipino : unexplained.
- Italian : nickname from seno ‘sense’, Venetian dialect form of standard Italian senno.
- Catalan (also Senó) : habitational name from any of the places named Seno or Senó.