pedwerydd ar bymtheg

== Welsh == === Alternative forms === 19eg (abbreviation) === Etymology === From pedwerydd (“fourth”) +‎ ar (“on”) +‎ pymtheg (“fifteen”). === Pronunciation === (North Wales) IPA(key): /pɛdˌwɛrɨ̞ð ar ˈbəmθɛɡ/ (South Wales) IPA(key): /pɛdˌweːrɪð ar ˈbəmθɛɡ/, /pɛdˌwɛrɪð ar ˈbəmθɛɡ/ === Adjective === pedwerydd ar bymtheg (feminine singular pedwaredd ar bymtheg, plural pedwerydd ar bymtheg, not comparable) (ordinal number) nineteenth === Mutation ===