Sabellianism n. : The doctrines or tenets of Sabellius. See Sabellian, n.

Example:
What is the heresy of the Early Christian Church known as Sabellianism?

Taxonomy
Sabellianism, Sabellius, God, Modalism, the Father, Tertullian, baptism, Holy Spirit, free encyclopedia, belief, modes, heresy, Praxeas, Oneness Pentecostalism, monarchism, believer, third century, teachings.

Defination from the web:
... In Christianity, Sabellianism, (also known as modalism, modalistic monarchianism, or modal monarchism) is the nontrinitarian belief that the ...