heb•dom•a•dar•yPronunciation: (heb-dom'u-der"ē), [key]
—n., pl. -dar•ies,
Rom. Cath. Ch.
a member of a church or monastery appointed for one week to sing the chapter Mass and lead in the recitation of the breviary.
hebdomadal (def. 1).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.