[awr-thraws; English awr-thros]
Greek Orthodox Church. the morning office, corresponding to matins.
Origin of orthros
< Late Greek, Greek órthros dawn
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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Orthros, or′thros, n. one of the Greek canonical hours, corresponding to the Western lauds.