Where does “estral” come from?

estral (Spanish) comes from Spanish estro, from Latin oestrus, from Ancient Greek οἶστρος, from Proto-Indo-European h₁eysh₂- — to strengthen; to propel.

estral (Spanish): oestral; oestrous relating to oestrus, a female animal’s willingness to mate

Definitions

  1. oestral; oestrous relating to oestrus, a female animal’s willingness to mate

Ancestry of “estral”, step by step

StepLanguageWordMeaning
1Spanishestrogadfly; inspiration; estrus
2Latinoestrusgadfly
3Ancient Greekοἶστροςgadfly, breese; a sting, anything that drives mad
4Proto-Indo-Europeanh₁eysh₂-to strengthen; to propel
Every word from Proto-Indo-European h₁eysh₂- →Every word from Ancient Greek οἶστρος →Every word from Latin oestrus →