dox·ol·o·gy 
(dŏk-sŏlə-jē)
(dŏk-sŏlə-jē)n. pl. dox·ol·o·gies
An expression of praise to God, especially a short hymn sung as part of a Christian worship service.
[Medieval Latin doxologia, from Greek doxologiā, praise : doxa, glory, honor (from dokein, to seem; see dek- in the Appendix of Indo-European roots) + logos, saying; see -LOGY.]
dox′o·logi·cal (dŏk′sə-lŏjĭ-kəl) adj.
dox′o·logi·cal·ly adv.