The grammatical form denoting more than one person, place, thing, or idea.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Some bacteria have developed the ability to break down beta-lactam antibiotics like penicillins and cephalosporins, making them ineffective.
From Science Daily ● Feb. 1, 2024
"The fungus growing on the hedgehog was releasing penicillins," explained Prof Holmes.
From BBC ● Jan. 5, 2022
The second were synthetic penicillins, modified in the lab to resist the bugs' enzymes.
From The Guardian ● Jan. 24, 2013
It steadily gained resistance against entire classes of antibiotics: first the penicillins in the 1960s, then the tetracyclines in the 1980s, and Cipro and its chemical cousins, known as fluoroquinolones, in the 1990s.
From Scientific American ● May 4, 2012
Last week the British were saluting the arrival of a new penicillin prince, Penbritin,* which promises to carry the fight against groups of microbes that have defied all previous penicillins.
From Time Magazine Archive
