Also see definition of "Magnificat" in Word Study
Study Dictionary
Magnificat
Arts Topics:
Magnificat
Magnificat [NAVE]
MAGNIFICAT, of Mary, Luke 1:46-55.MAGNIFICAT [ISBE]
MAGNIFICAT - mag-nif'-i-kat: The name given to the hymn of Mary in Lk 1:46-55, commencing "My soul doth magnify the Lord." Three old Latin manuscripts substitute the name "Elisabeth" for "Mary" in 1:46, but against this is the authority of all Greek manuscripts and other Latin versions. The hymn, modeled in part on that of Hannah in 1 Sam 2:1 ff, is peculiarly suitable to the circumstances of Mary, and plainly could not have been composed after the actual appearance and resurrection of Christ. Its early date is thus manifest.
Also see definition of "Magnificat" in Word Study