surdoes

From sur (“sour”) +‎ toes (“dough”).

• (North Wales) IPA^(key): /ˈsɨ̞rdɔɨ̯s/
• (South Wales) IPA^(key): /ˈsɪrdɔi̯s/

surdoes m (uncountable, not mutable)

1. leaven, sourdough

• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “surdoes”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies