I. |yünə|terēən, -ta(a)r-, -tār- noun
( -s )
Etymology: New Latin unitarius unitarian (from Latin unitus — past participle of unire to unite — + -arius -ary) + English -an
1. usually capitalized
a. : a Christian who believes that the deity exists only in one person : a unipersonalist who denies the doctrine of the Trinity : a member of a Christian denomination who in general affirms the principles of individual freedom of belief, the free use of reason in religion, commitment to advancing truth, religious tolerance, universal brotherhood of man, a creedless church, a united world community, and support of a vigorous program of liberal social action
b. : a non-Christian monotheist (as a Muhammadan)
2.
a. : an advocate of a theory or doctrine founded upon unity ; specifically : monist
b. : an advocate of unity or a unitary system ; specifically : one who advocates centralization in government
c. : an observer of the dramatic unities
II. adjective
1. usually capitalized : of, relating to, or involving Unitarians or their doctrines
2. : unitary 1: as
a. : monistic
b. : of, relating to, or advocating centralization in government or administration