/ Dictionary / Index C classis: Meaning and Definition of Find definitions for: clas•sis Pronunciation: (klas'is), [key] — pl. clas•ses the organization of pastors and elders that governs a group of local churches; a presbytery. the group of churches governed by such an organization. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. class interval classism Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language