cryolit

== Welsh == === Etymology === Borrowed from English cryolite. === Noun === cryolit m (countable and uncountable, plural cryolitau) (mineralogy) cryolite Synonym: rhewfaen === Mutation === === Further reading === Griffiths, Bruce; Glyn Jones, Dafydd (1995), “cryolite”, in Geiriadur yr Academi: The Welsh Academy English–Welsh Dictionary‎[1], Cardiff: University of Wales Press, →ISBN Delyth Prys; J.P.M. Jones; Owain Davies; Gruffudd Prys (2006), Y Termiadur: termau wedi'u safoni; standardised terminology‎[2] (in Welsh), Cardiff: Awdurdod cymwysterau, cwricwlwm ac asesu Cymru (Qualifications curriculum & assessment authority for Wales), →ISBN