ordo
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or·do
(ôr′dō)n. pl. or·di·nes (-də-nēz′) or or·dos Roman Catholic Church
An annual calendar containing instructions for the Mass and office to be celebrated on each day of the year.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ordo
(ˈɔːdəʊ)n
(Ecclesiastical Terms) Christian Church an order of procedures
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
or•do
(ˈɔr doʊ)n., pl. or•di•nes (ˈɔr dnˌiz)
a booklet of directions for the Roman Catholic order of service and Mass for each day in the year.
[1840–50; < Medieval Latin ōrdō, Latin: series, row, order]
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