ex opera operato

A Latin phrase for “from the work worked,” which roughly translated means, “just by doing it correctly.”; It is a phrase used to describe the Roman Catholic view that the MassComes from the Latin word “missa” that literally means dismissed and refers to the practice in the 6th century of dismissing those in attendance d... more is a sacrifice that is valid simply because it was properly performed by an ordained priest. Sometimes this concept is expressed by the phrase opus operatumSee ex opera operatum. more. See also, Donists.