cyflymder

== Welsh == === Alternative forms === cyflymdra === Etymology === From cyflym (“fast”) +‎ -der. === Pronunciation === IPA(key): /kəvˈləmdɛr/ === Noun === cyflymder m (usually uncountable, plural cyflymderau) speed, pace Synonyms: buander, brys (physics) velocity ==== Derived terms ==== atalfa cyflymder (“speed bump”) cyfyngiad cyflymder (“speed limit”) ==== Related terms ==== (physics) buanedd (“speed”) === Mutation ===