from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A Christian who believes that the substance and nature of God the Father and God the Son are different; an Arian.
from the GNU version of the Collaborative International Dictionary of English
- adj. Having different essential qualities; of a different nature.
- n. One of those Arians who held that the Son was of a different substance from the Father.
From Greek heteroousios, differing in substance : hetero-, hetero- + ousiā, substance, nature; see Homoiousian.(American Heritage® Dictionary of the English Language, Fourth Edition)