Where does “leathré” come from?

leathré (Irish) comes from Irish ré, from Irish eile, from Old Irish aile, from Proto-Celtic alyos, from Proto-Indo-European h₂élyos, from Proto-Indo-European h₂él- — to grow, nourish.

leathré (Irish): half-life

Definitions

  1. half-life

Ancestry of “leathré”, step by step

leathré traces back through two separate lines of ancestry.

via Irish

StepLanguageWordMeaning
1Irishstretch of ground; level ground; field; row
2Irisheileother, another; next, more, else; else;...
3Old Irishaileother, second, one; another, the other, others;...
4Proto-Celticalyosother, second
5Proto-Indo-Europeanh₂élyosother, another
6Proto-Indo-Europeanh₂él-to grow, nourish

via Irish leath

StepLanguageWordMeaning
1Irishleathside; part, direction; half; part, portion;...
2Old Irishlethhalf; direction; side
3Proto-Celticletosside
4Old Czechlétosummer
5Proto-Slaviclětosummer; year
6Proto-Indo-Europeanleh₁tóm
Every word from Proto-Indo-European h₂él-Every word from Proto-Indo-European h₂élyosEvery word from Proto-Celtic alyos