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.
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·muni·ca′tive (-kā′tĭv, -kə-), ex′com·muni·ca·to′ry (-kə-tôr′ē) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.