Where does “photoallergenic” come from?

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

photoallergenic (English): Relating to, or functioning as a photoallergen

Definitions

  1. Relating to, or functioning as a photoallergen

Ancestry of “photoallergenic”, step by step

photoallergenic traces back through two separate lines of ancestry.

via English allergenic

StepLanguageWordMeaning
1Englishallergenicof or pertaining to an allergen; having the...
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 h₁énEvery word from Latin īn-Every word from Proto-Italic en