As nouns the difference between unitarianist and unitarianism
is that unitarianist is unitarian / Unitarian while unitarianism is the belief in a single God, not divided into any aspects, particularly when presented as a contrast to Christian trinitarianism.
As a proper noun Unitarianism is
(beginning in 1961) The religion known as Unitarian Universalism.
unitarianism
Noun
(-)
The belief in a single God, not divided into any aspects, particularly when presented as a contrast to Christian trinitarianism.
Derived terms
* Unitarianism
* unitarian
* unitarians
* unitarianistic
* unitarianistical
* unitarianistically
See also
* binitarianism
* trinitarianism
* monotheism