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The Clue
Sir Alexander Fleming's discovery: 1928 (10 letter answer)
The Answer
PENICILLIN
Tags
Notes
The answer PENICILLIN is so rare that it appears less than once every 2500 puzzles.
Related Clues
Drug introduced commercially in 1945
Definition
PENICILLIN as a noun:
1. any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases