Where does “contrantiscion” come from?

contrantiscion (English) comes from English antiscion, from Ancient Greek ἀντίσκιον, from Ancient Greek σκιά, from Proto-Indo-European (s)ḱeh₃ih₂, from Proto-Indo-European (s)ḱeh₃- — darkness, shadow.

contrantiscion (English): The point opposite an antiscion, having the opposing sign and degree

Definitions

  1. The point opposite an antiscion, having the opposing sign and degree

Ancestry of “contrantiscion”, step by step

contrantiscion traces back through two separate lines of ancestry.

via English antiscion

StepLanguageWordMeaning
1EnglishantiscionThe mirror image, or shadow, of a planet, based...
2Ancient Greekἀντίσκιον
3Ancient Greekσκιάshadow; shade
4Proto-Indo-European(s)ḱeh₃ih₂shadow, shade
5Proto-Indo-European(s)ḱeh₃-darkness, shadow

via English Contra

StepLanguageWordMeaning
1EnglishContraA member of any of various rightist guerrilla...
2Latincontrāagainst
3Latinubīwhere? in what place?, in which place?
4Latincubī
5Proto-Italic*kʷuðeiwhere
Every word from Proto-Indo-European (s)ḱeh₃-Every word from Proto-Indo-European (s)ḱeh₃ih₂Every word from Ancient Greek σκιά