What Does Grātiā Plēna Mean?
One of the most familiar expressions in Ecclesiastical Latin appears in the Ave Maria:
Grātiā plēna — “Full of grace.”
The word grātiā means “grace.” It is in the ablative singular, expressing what Mary is full of.
The adjective plēna means “full” and is feminine singular. It describes Mary. The construction grātiā plēna therefore means “full of grace.”
Notice that the idea of “of” is not contained in grātiā itself. The ablative is used because plēnus (“full”) governs the ablative to express what something is full of.
This short phrase gives us a glimpse into how Latin grammar helps us understand the language of Catholic prayer. Even two familiar words can reveal something about how Latin expresses meaning.
At Schola Sacrae, we explore Ecclesiastical Latin, Koine Greek, Sacred Scripture, Sacred Tradition, and Catholic prayer through lessons, articles, and courses.
In obsequiō Iēsū Christī.
Have you studied Latin before, or are you just beginning to explore this beautiful language of the Church?

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Welcome to Hive, @scholasacrae! Your explanation that “of” isn’t contained in grātiā itself, but comes from how plēnus governs the ablative, makes a familiar prayer an approachable grammar lesson. InLeo Threads (inleo.io) could be a useful place to share bite-sized Latin lessons like this and invite questions between longer posts. Is there another phrase from Catholic prayer you’d especially like to unpack next?
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