Where does “photoinstability” come from?

photoinstability (English) comes from English instability, from Middle French instabilité, from Latin instabilitas, from Latin instabilis, from Latin stabilis, from Latin stare, from Latin sto, from Proto-Italic staēō.

photoinstability (English): chemical instability in the presence of light

Definitions

  1. chemical instability in the presence of light

Ancestry of “photoinstability”, step by step

photoinstability traces back through two separate lines of ancestry.

via English instability

StepLanguageWordMeaning
1EnglishinstabilityThe quality of being unstable; A state that is...
2Middle Frenchinstabilité
3Latininstabilitasunsteadiness, instability
4Latininstabilisunsteady, unstable, shaky; inconstant,...
5LatinstabilisThat stands firm; firm, steadfast, steady, sure,...
6Latinstarepresent active infinitive of stō; stand; to be
7LatinstoI stand; I stay, remain; I am
8Proto-Italicstaēōstand
9Proto-Indo-Europeansth₂éh₁yetito stand
10Proto-Indo-European*steh₂-

via English photo

StepLanguageWordMeaning
1EnglishphotoA photograph; A photo finish; To take a...
2EnglishphotographyThe art and technology of producing images on...
3Frenchphotographiephotography; photograph
4Ancient Greekφωτο-
5Ancient GreekφῶςAttic form of φᾰ́ος
6Proto-Hellenicpʰáos
7Proto-Indo-Europeanbʰéh₂os
8Proto-Indo-Europeanbʰeh₂-to shine, glow light; to speak, say
9Proto-Indo-Europeanbʰeh₂-s-ri-
Every word from Proto-Indo-European *steh₂-