1. In the Christian era; used before dates after the supposed year Christ was born
   - AD, A.D., year of our Lord

Encyclopedia: Anno Domini

• Ottorino Respighi
• Ottumwa
• Otus
• Otus asio
• Otus scops
• Yokohama
• Yokuts
• yolk
• yolk sac
• yolked
• yolky
• yom
• Yom Kippur
• Yom Kippur War
• yon
• yond
• yonder
• yoni
• yonks
• yoo-hoo
• yoof
• yore
• York
• yorker
• Yorkshire