to cut off from communion with a church or exclude from the sacraments of a church by ecclesiastical sentence.
2.
to exclude or expel from membership or participation in any group, association, etc.: an advertiser excommunicated from a newspaper.
–noun
3.
an excommunicated person.
–adjective
4.
cut off from communion with a church; excommunicated.
Origin: 1375–1425; late ME excommunicaten (v.) < LL excommūnicātus lit., put out of the community (ptp. of excommūnicāre), equiv. to ex-ex-1+ commūn(is) common, public + -ic- (by analogy with commūnicāre to communicate) + -ātus-ate1
To deprive of the right of church membership by ecclesiastical authority.
To exclude by or as if by decree from membership or participation in a group.
n.
(-kĭt) A person who has been excommunicated. adj.
(-kĭt, -kāt') Having been excommunicated.
[Middle English excommunicaten, from Late Latin excommūnicāre, excommūnicāt- : Latin ex-, ex- + Latin commūnicāre, to share (from commūnis, common; see common).] ex'com·mu'ni·ca'tive (-kā'tĭv, -kə-), ex'com·mu'ni·ca·to'ry (-kə-tôr'ē, -tōr'ē) adj., ex'com·mu'ni·ca'tor n.