gronyn isatomig

== Welsh == === Etymology === Calque of English subatomic particle. === Noun === gronyn isatomig m (plural gronynnau isatomig) (particle physics) subatomic particle ==== Related terms ==== gronyn elfennol (“elementary particle”) === Mutation === === Further reading === The Language Technologies Unit of the Bedwyr Center of Bangor University (2023), “gronyn isatomig”, in Y Termiadur Addysg.