Penicillin
来自Big Physics
from the modern Latin genus name Penicillium (see penicillium) + -in1.
wiktionary
From translingual Penicillium + -in. Coined by Alexander Fleming after Penicillium notatum (now Penicillium chrysogenum), a fungus from which penicillin is obtained.
etymonline
penicillin (n.)
antibiotic agent active against bacteria but harmless to most persons, 1929, coined in English by Alexander Fleming (1881-1955), who first recognized its antibiotic properties, from Modern Latin Penicillium notatum (1867), the name of the mould from which it was first obtained, from Latin penicillus "paintbrush" (see pencil (n.)), in reference to the shape of the mould cells.