opus Dei
Concise Oxford English Dictionary © 2008 Oxford University Press:
opus Dei /ˌəʊpəs ˈdeɪiː, ˌɒpəs/
▶noun
- 1 Christian Church liturgical worship regarded as humankind's primary duty to God.
- 2 (Opus Dei) a Roman Catholic organization of laymen and priests founded in 1928 with the aim of re-establishing Christian ideals in society.
– origin C19: from med. L., lit. ‘work of God’.
'opus Dei' also found in these Oxford entries:

