I. -rēən adjective
Etymology: sectary (I) + -an
1. : of or relating to one or more sectaries ; specifically : of or relating to the Independents or another Protestant nonconformist sect (as in 17th century England)
2. : of, relating to, or having the characteristics of one or more sects especially of a religious character
sectarian differences
3.
a. : confined to the limits of one religious group, one school, or one party : denominational , partisan
sectarian religious training
the negations of sectarian ideology — Sidney Hook
sectarian squabbles in psychology — Times Literary Supplement
b. : limited in character or scope : of narrow interests : characterized by bigotry : parochial
a sectarian mind
wishing to avoid a sectarian presentation of the matter
II. noun
( -s )
1.
a. : an adherent of a particular religious sect
b. : dissenter 2
2. : one characterized by a narrow and bigoted adherence to a sect : one limited to narrow and partisan views, interests, or sympathies