octoechos

noun

oc·​to·​echos

ˌäktōˈēˌkäs

plural -es

: a liturgical book of the Eastern Orthodox Church attributed to St. John of Damascus and containing all hymns to be used at offices throughout the whole week

Word History

Etymology

New Greek oktōēchos, oktaēchos, from Greek okta- octa- + ēchos sound

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