Agnus Dei

UK: /ˈæɡnʊs ˈdeɪɪ/ US: (ag′nəs dē′ī, de′ē; ä′nyŏŏs de′ē)

WordReference Random House Unabridged Dictionary of American English © 2026

Ag•nus De•i  (ag′nəs dē′ī, de′ē; ä′nyŏŏs de′ē), 

1. [Eccles.]
   • a figure of a lamb as emblematic of Christ.
   • such a representation with the nimbus inscribed with the cross about its head, and supporting the banner of the cross.
2. a prayer addressed to Christ as Savior preceding the communion in the Mass.
3. a musical setting of this prayer.

• Latin: lamb of God

Collins Concise English Dictionary © HarperCollins Publishers::

Agnus Dei / ˈæɡnʊs ˈdeɪɪ/ noun

1. the figure of a lamb bearing a cross or banner, emblematic of Christ
2. a chant beginning with these words or a translation of them, forming part of the Roman Catholic Mass or sung as an anthem in the Anglican liturgy

Etymology: Latin: Lamb of God