/ Dictionary / Index W World Communion Sunday: Meaning and Definition of Find definitions for: World' Commun'ion Sun"day Pronunciation: [key] the first Sunday in October, during which members of ecumenical churches throughout the world celebrate Holy Communion, esp. to affirm their unity in Christ. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. world-class World Council of Churches Related Content Daily Word Quiz: stellar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language