Where does “photoallergic” come from?

photoallergic (English) comes from English allergic, from English -ic, from English image, from French image, from Portuguese imagem, from Spanish imagen, from Italian immagine, from Latin imāginem — in.

photoallergic (English): Showing an allergic reaction only after exposure...

Definitions

  1. Showing an allergic reaction only after exposure...

Ancestry of “photoallergic”, step by step

photoallergic traces back through two separate lines of ancestry.

via English allergic

StepLanguageWordMeaning
1EnglishallergicOf or pertaining to allergy; Having an allergy;...
2English-icUsed to form adjectives from nouns with the...
3EnglishimageAn optical or other representation of a real...
4Frenchimagepicture, image; frame; first-person singular...
5Portugueseimagemimage; picture; figure; image; image; face
6Spanishimagenimage
7Italianimmagineimage; imago
8Latinimāginem—
9Latinim-Alternative form of in-; form of "in"; in
10Latinīn-un-, non-, not
11Latinînin, at, on, upon, from (space)
12Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
13Proto-Italicenin
14Proto-Indo-Europeanh₁énin

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 h₁én →Every word from Latin īn- →Every word from Proto-Italic en →