Where does “пиперациллин” come from?

пиперациллин (Russian) comes from English piperacillin, from English -cillin, from English penicillin, from Translingual Penicillium, from Latin pēnicillum, from Latin -illus, from Latin -lus, from Proto-Italic -elos — Forms agent nouns from verbal roots.

Ancestry of “пиперациллин”, step by step

StepLanguageWordMeaning
1EnglishpiperacillinA particular ureidopenicillin antibiotic
2English-cillin
3EnglishpenicillinAny of a group of narrow-spectrum antibiotics...
4TranslingualPenicilliumgenus
5LatinpēnicillumA painter's brush
6Latin-illusUsed to form adjectives from nouns
7Latin-lusAlternative form of -ulus; diminutive suffix
8Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
9Proto-Indo-European-e-lós
10Proto-Indo-European-lósForms agent nouns from verbal roots

Words derived from “пиперациллин

Every word from Proto-Indo-European -lós