Definition of: excommunicate

(eks′kə·my′nə·kāt) v.t. ·cat·ed, ·cat·ing
1. To punish by an ecclesiastical sentence of exclusion from the sacraments and communion of the church.
2. To expel in disgrace from any organization.
—adjective Excommunicated.
—noun An excommunicated person. [<LL excommunicatus, pp. of excommunicare <ex- out + communicare share <communis common]
—ex′com·mu′ni·ca′tor noun