Where does “antitumorigenesis” come from?

antitumorigenesis (English) comes from English tumorigenesis, from English tumor, from Middle English tumour, from Old French tumour, from Latin tumor, from Latin -or, from Proto-Italic -ōs, from Proto-Indo-European -ōs — Creates action nouns or result nouns from verbs;...

Ancestry of “antitumorigenesis”, step by step

antitumorigenesis traces back through two separate lines of ancestry.

via English tumorigenesis

StepLanguageWordMeaning
1EnglishtumorigenesisProduction of a new tumor or tumors; The process...
2EnglishtumorAn abnormal growth; differential diagnosis...
3Middle Englishtumourtumour; The growth of tumours or boils
4Old Frenchtumourtumor
5LatintumorThe state of being swollen; A swelling, tumor;...
6Latin-orused to form a third-declension masculine...
7Proto-Italic-ōsCreates masculine action nouns or result nouns...
8Proto-Indo-European-ōsCreates masculine and feminine action nouns or...
9Proto-Indo-European-oss
10Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via English anti

StepLanguageWordMeaning
1EnglishantiOpposed to something; That has a torsion angle...
2Englishanti-Against, hostile to; Contrasting with the norm;...
3Ancient Greekἀντι-anti-, against; like, reminiscent of
4Ancient Greekᾰ̓ντῐ́opposite
Every word from Proto-Indo-European -osEvery word from Latin -orEvery word from Latin tumor
antitumorigenesis — Etymology, Origin & Word History | Etymology Explorer