- Noun. (Christianity, lang en) A disciple of the Egyptian monk Arius, presbyter of Alexandria, who denied the Trinity but did not deny the preexistence of Christ.
- Noun. A person whose star sign is Aries.
- Noun. see Aryan: A member of the ancient tribe of the Arios valley in Afghanistan, or their descendants.
- Adjective. (Christianity) Of or pertaining to Arius; or Arianism.