1. opificium — de Vaan
opificium 'the performance of constructive work5 (Varro+), opificlna 'performance5 (PL)* * * , Pit. *cp/-. . PIE *h3e/op-(i-) 'ability, force . IE cognates: Hit. happina- 'rich', happinant- 'rich (person)' < *h3ep-en-o-; Skt. apnas- 'possession, property' [n.], YAv. afnatfhant'rich in property5 < *h3ep-nos-, Gr. δμπνη [fJ 'food, corn' < *h3ep-n-h2-? Lat qfficium < *opi-fak-io-. The existence of different derivatives … — [de Vaan, s.v. opificium, p. 445]