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þ
ǣ
sma
N (masc)
Leaven
Source:
Ringe 2014
:235,
https://bosworthtoller.com/31498
originates from: PWGmc
*þaisimō
"yeast" (þaisimō
>
þaisimā
>
þāsimā
>
þǣsimā
>
þǣsmā
>
þǣsma) through pwgmc-to-oe
(source:
Ringe 2014
:235)