gwahaniaethiad

== Welsh == === Etymology === From gwahaniaethu +‎ -iad. === Pronunciation === (North Wales, standard) IPA(key): /ˌɡwahanˈjeɨ̯θjad/ (South Wales, standard) IPA(key): /ˌɡwahanˈjei̯θjad/ === Noun === gwahaniaethiad m (plural gwahaniaethiadau) differentiation === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “gwahaniaethiad”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies