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Cherubicon

American  
[khe-roo-vee-kawn, chi-roo-bi-kon] / ˌxɛ ru viˈkɔn, tʃɪˈru bɪˌkɒn /
Or Cherubikon

noun

Eastern Church.
  1. the hymn sung during the Great Entrance by the choir, which represents the cherubim.