(j′bə·lāt) v.t. & v.i. ·lat·ed, ·lat·ing
To rejoice; exult. [<L jubilatus, pp. of jubilare exult]

(j′bə·lā′tē, -lä′-) noun
1. The 100th (in the Vulgate and Douai versions, the 99th) Psalm, or the music to which it may be set: from its opening word in the Latin version.
2. The third Sunday after Easter, whose introit begins Jubilate. [<L, imperative of jubilare exult, be joyful]