sur·sum cor·da /ˌsʊrsəmˈkɔrdə, ˌdɑ/
Sur·sum cor·da Eccl. In the Eucharist, the versicles immediately before the preface, inviting the people to join in the service by “lifting up the heart” to God.
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sursum corda
n : (Roman Catholic Church) a Latin versicle meaning `lift up
your hearts'