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tr.v. ex·com·mu·ni·cat·ed, ex·com·mu·ni·cat·ing, ex·com·mu·ni·cates
1. To deprive of the right of church membership by ecclesiastical authority.
2. 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) adj.
ex′com·mu′ni·ca′tor n.
References in periodicals archive ?
Soon the excommunicator of Gronlund himself was condemned for "revisionism.
Moreover so much more does an excommunicator seem to defile the sacred church than the person physically killing a man at the altar; on this it must be observed that defilement of the body does not belong to excommunication, however much it tastes of sin, both because defilement by spitting or other burdens of nature might be more base than defilement through semen or blood, and also because that defilement is wiped out by bodily cleansing.
In De planctu, he is the excommunicator of homoeroticism, in the Roman de la Rose, the advocate of adultery, and in the Confessio Amantis, the analyst of incest.