gwythiennol

== Welsh == === Alternative forms === gwythennol === Etymology === gwythïen (“vein”) +‎ -ol. === Adjective === gwythiennol (feminine singular gwythiennol, plural gwythiennol, equative mor wythiennol, comparative mwy gwythiennol, superlative mwyaf gwythiennol) (anatomy) venous Synonym: gwythiennog ==== Derived terms ==== prifwythiennol (“pertaining to an arterial road”) ==== Related terms ==== rhedwelïol (“arterial”) === Mutation === === Further reading === Griffiths, Bruce; Glyn Jones, Dafydd (1995), “venous”, in Geiriadur yr Academi: The Welsh Academy English–Welsh Dictionary‎[1], Cardiff: University of Wales Press, →ISBN D. G. Lewis, N. Lewis, editors (2005–present), “gwythiennol”, in Gweiadur: the Welsh–English Dictionary, Gwerin R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “gwythiennol”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies