Excommunicate \Ex`com*mu"ni*cate\, v. t. [imp. & p. p.
{Excommunicated}; p. pr. & vb. n. {Excommunicating}.]
1. To put out of communion; especially, to cut off, or shut
out, from communion with the church, by an ecclesiastical
sentence.
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2. To lay under the ban of the church; to interdict.
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Martin the Fifth . . . was the first that
excommunicated the reading of heretical books.
--Miltin.
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