hynny yw

== Welsh == === Etymology === Literally, “that is”. === Adverb === hynny yw that is, that is to say, namely Synonym: sef ==== Usage notes ==== Abbreviated as h.y. === Further reading === D. G. Lewis, N. Lewis, editors (2005–present), “hynny”, in Gweiadur: the Welsh–English Dictionary, Gwerin R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “hynny yw”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies