Where does “heterospecies” come from?

heterospecies (English) comes from English hetero, from English heterosexual, from English -sexual, from English sexual, from Latin sexuālis, from Latin sexus, from Proto-Italic seksus, from Proto-Indo-European séksus — to cut, cut off, sever.

heterospecies (English): Related to two separate species

Definitions

  1. Related to two separate species

Ancestry of “heterospecies”, step by step

heterospecies traces back through two separate lines of ancestry.

via English hetero

StepLanguageWordMeaning
1EnglishheteroHeterosexual: of, pertaining to, or being a...
2EnglishheterosexualSexually attracted to members of the opposite...
3English-sexualForms a noun or adjective describing a state or...
4EnglishsexualArising from the fact of being male or female;...
5Latinsexuālissexual
6Latinsexusdivision; sex; gender
7Proto-Italicseksus
8Proto-Indo-Europeanséksus
9Proto-Indo-Europeansek-to cut, cut off, sever

via English Species

StepLanguageWordMeaning
1EnglishSpeciesA type or kind. Compare
2Latinspeciēsseeing, view, look
3Latinspeciōto observe, watch, look at
4Proto-Italicspekjōto observe, to see
5Proto-Indo-Europeanspéḱyetito be looking at, to keep looking at
6Proto-Indo-Europeanspeḱ-to see, to look, to observe
Every word from Proto-Indo-European sek-Every word from Proto-Indo-European séksusEvery word from Proto-Italic seksus