newidydd

== Welsh == === Etymology === From newid (“to change, to transform”) +‎ -ydd (“-er”). === Noun === newidydd m (plural newidyddion, not mutable) (physics, electrical engineering) transformer (linguistics) mutated form of a consonant or vowel ==== Derived terms ==== newidydd codi (“step-up transformer”) newidydd gostwng (“step-down transformer”) === References ===