The Collaborative International Dictionary of English v.0.48:

Alleluia \Al`le*lu"ia\, Alleluiah \Al`le*lu"iah\, n. [L.
   alleluia, Gr. ?, fr. Heb. hall[=e]l[=u]-y[=a]h. See
   Hallelujah.]
   An exclamation signifying Praise ye Jehovah. Hence: A song of
   praise to God. See Hallelujah, the commoner form.
   [1913 Webster]

         I heard a great voice of much people in heaven, saying,
         Alleluia.                                --Rev. xix. 1.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "Alleluia":
   Agnus Dei, Anamnesis, Blessing, Canon, Collect, Communion,
   Consecration, Credo, Dismissal, Epistle, Fraction, Gloria, Gospel,
   Gradual, Introit, Kyrie, Kyrie Eleison, Last Gospel, Lavabo,
   Offertory, Paternoster, Pax, Post-Communion, Preface, Sanctus,
   Secreta, Tersanctus, Tract



Moby Thesaurus II by Grady Ward, 1.0:

51 Moby Thesaurus words for "alleluia":
   Agnus Dei, Benedicite, Gloria, Gloria Patri, Gloria in Excelsis,
   Introit, Magnificat, Miserere, Nunc Dimittis, Te Deum, Trisagion,
   Vedic hymn, answer, anthem, antiphon, antiphony, applause,
   canticle, chant, cheer, chorale, chorus of cheers, cry, doxology,
   hallelujah, hooray, hosanna, hurrah, hurray, huzzah, hymn,
   hymn of praise, hymnody, hymnography, hymnology, laud, mantra,
   motet, offertory, offertory sentence, paean, psalm, psalmody, rah,
   report, response, responsory, shout, versicle, yell, yippee



Easton's 1897 Bible Dictionary:

Alleluia
   the Greek form (Rev. 19:1, 3, 4, 6) of the Hebrew Hallelujah =
   Praise ye Jehovah, which begins or ends several of the psalms
   (106, 111, 112, 113, etc.).


Hitchcock's Bible Names Dictionary (late 1800's):

Alleluia, praise the Lord