Where does “ynysu” come from?
ynysu (Welsh) comes from Welsh ynys, from Old Welsh inis, from Proto-Brythonic ɨnɨs, from Proto-Celtic enistī, from Proto-Indo-European h₁eni-sth₂-ih₂, from Proto-Indo-European steh₂- — to stand.
ynysu (Welsh): to insulate
Definitions
- to insulate