Socinian

noun

So·​cin·​i·​an sə-ˈsi-nē-ən 

sō-

: an adherent of a 16th and 17th century theological movement professing belief in God and adherence to the Christian Scriptures but denying the divinity of Christ and consequently denying the Trinity

Socinian adjective

Socinianism

sə-ˈsi-nē-ə-ˌni-zəm 

sō-

noun

Word History

Etymology

New Latin socinianus, from Faustus Socinus

First Known Use

1614, in the meaning defined above