Where does “lántosach” come from?

lántosach (Irish) comes from Irish tosach, from Old Irish tosach, from Proto-Celtic towissākos, from Proto-Celtic *towissus, from Proto-Celtic wissus, from Proto-Indo-European wéydtus, from Proto-Indo-European weyd- — to see.

lántosach (Irish): corner forward

Definitions

  1. corner forward

Ancestry of “lántosach”, step by step

lántosach traces back through two separate lines of ancestry.

via Irish tosach

StepLanguageWordMeaning
1Irishtosachbeginning; front; sole
2Old Irishtosachbeginning
3Proto-Celtictowissākoschief, primary, first
4Proto-Celtic*towissusact of leading, beginning
5Proto-Celticwissusact of discovering, finding out; knowledge
6Proto-Indo-Europeanwéydtus
7Proto-Indo-Europeanweyd-to see

via Irish lán

StepLanguageWordMeaning
1Irishlánfull, replete; swelling; full
2Old Irishlánfull
3Proto-Celticɸlānosfull
4Proto-Indo-Europeanpl̥h₁nósfull
5Proto-Indo-Europeanpleh₁-to fill
Every word from Proto-Indo-European weyd-Every word from Proto-Indo-European wéydtusEvery word from Proto-Celtic wissus