Nunc Di·mit·tis 
(nŭngk′ dĭ-mĭtĭs, nngk′)
(nŭngk′ dĭ-mĭtĭs, nngk′)n.
A Christian canticle or hymn using the words of Simeon in Luke 2:29-32, beginning "Nunc dimittis servum tuum" ("Now lettest thou thy servant depart").
[Late Latin Nunc Dīmittis : Latin nunc, now + Latin dīmittis, second person sing. present tense of dīmittere, to send away.]