Where does “apyrogenic” come from?

apyrogenic (English) comes from English pyrogenic, from English genic, from English -ic, from English image, from French image, from Portuguese imagem, from Spanish imagen, from Italian immagine — in.

Ancestry of “apyrogenic”, step by step

apyrogenic traces back through two separate lines of ancestry.

via English pyrogenic

StepLanguageWordMeaning
1Englishpyrogenicgenerating or produced by heat, especially in the...
2Englishgenicof, relating to, produced by, or being a gene
3English-icUsed to form adjectives from nouns with the...
4EnglishimageAn optical or other representation of a real...
5Frenchimagepicture, image; frame; first-person singular...
6Portugueseimagemimage; picture; figure; image; image; face
7Spanishimagenimage
8Italianimmagineimage; imago
9Latinimāginem
10Latinim-Alternative form of in-; form of "in"; in
11Latinīn-un-, non-, not
12Latinînin, at, on, upon, from (space)
13Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
14Proto-Italicenin
15Proto-Indo-Europeanh₁énin

via English A

StepLanguageWordMeaning
1EnglishAThe ordinal number first, derived from this...
2EnglishANDAlternative form of ∧, the conjunction operator;...
3Middle Englishandand, and then; however, yet, but, though. while;...
4Old Englishandand; even; also
5Proto-Germanicandiin addition, furthermore, and
6Proto-Indo-Europeanh₂éntiopposite; near; in front
7Proto-Indo-Europeanh₂éntsforehead; front
8Proto-Indo-Europeanh₂ent-face; forehead; front
9Proto-Indo-Europeanh₂en-on, onto
Every word from Proto-Indo-European h₁én