- Relating to one group - Pertaining to a sect, or to sects; peculiar to a sect;
bigotedly attached to the tenets and interests of a denomination; as,
sectarian principles or prejudices. - One of a sect; a member or adherent of a special school,
denomination, or religious or philosophical party; one of a party in
religion which has separated itself from established church, or which
holds tenets different from those of the prevailing denomination in a
state.