opus Dei /dāˈē/ noun

1. The work of God
2. Liturgical worship
3. In Benedictine monastic practice, the primary duty of prayer
4. (with caps) an international Roman Catholic organization of lay people and priests

opus latericium /la-tə-rishˈi-əm, -ikˈ or -te-rikˈi-ŭm/ noun

A form of Graeco-Roman brickwork

opus musivum /moo-sīˈvəm, mū- or moo-sēˈwŭm/ noun

Mosaic work

opus operantis /op-ə-ranˈtis/ noun

The effect of a sacrament ascribed (as by Protestants) to the spiritual disposition of the recipient

opus operatum /op-ə-rāˈtəm or op-e-räˈtŭm/ noun

Due celebration of a sacrament involving grace flowing from the sacramental act (the Roman Catholic view)

opus reticulatum /ri-tik-yə-lāˈtəm or re-tik-ŭ-läˈtŭm/ noun

Reticulated work