ópalacht

== Irish == === Etymology === From ópal (“opal”, noun) +‎ -acht (abstract suffix). === Noun === ópalacht f (genitive singular ópalachta) opalescence ==== Declension ==== ==== Related terms ==== ópalach (“opal, opalescent”, adjective) === Mutation === === References === Ó Dónaill, Niall (1977), “ópalacht”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN