sect has definitions from the field of religion
1
[ noun ] (religion) a subdivision of a larger religious group

Used in print

(Joyce O. Hertzler, American Social Institutions;...)

These groups have varied widely from mere families , primitive , totemic groups , and small modern cults and sects , to the memberships of great denominations , and great , widely dispersed world religions .

2
[ noun ] a dissenting clique

Synonyms

faction

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