Where does “postacrosome” come from?

postacrosome (English) comes from English acrosome, from English acro, from English acrobatic, from English -ic, from English image, from French image, from Portuguese imagem, from Spanish imagen — in.

Ancestry of “postacrosome”, step by step

postacrosome traces back through two separate lines of ancestry.

via English acrosome

StepLanguageWordMeaning
1EnglishacrosomeA structure forming the end of the head of a...
2Englishacroof or pertaining to something that combines...
3EnglishacrobaticOf or pertaining to an acrobat; vigorously active
4English-icUsed to form adjectives from nouns with the...
5EnglishimageAn optical or other representation of a real...
6Frenchimagepicture, image; frame; first-person singular...
7Portugueseimagemimage; picture; figure; image; image; face
8Spanishimagenimage
9Italianimmagineimage; imago
10Latinimāginem
11Latinim-Alternative form of in-; form of "in"; in
12Latinīn-un-, non-, not
13Latinînin, at, on, upon, from (space)
14Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
15Proto-Italicenin
16Proto-Indo-Europeanh₁énin

via English post

StepLanguageWordMeaning
1EnglishpostA long dowel or plank protruding from the ground;...
2Middle Frenchposte
3Italianpostamail, post; post office; stakes
4Latinprobāre
5Latinprobōto approve, permit, commend
6LatinProbusgood, serviceable, excellent, superior, able
7Proto-Indo-Europeanpro-bhwo-being in front, prominent
8Proto-Indo-Europeanpro-toward, forward
9Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
10Proto-Indo-Europeanper-before, in front; first; to go through
11Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Proto-Italic en