Enter a clue or pattern or both:
The Clue
Ozone destroyers, for short (4 letter answer)
The Answer
CFCS
Tags
Notes
The answer CFCS is so rare that it appears less than once every 2500 puzzles.
Related Clues
Regulated pollutants, for short
Definition
CFC as a noun:
1. (chlorofluorocarbon, CFC) = a fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans; "the chlorine in CFCs causes depletion of atmospheric ozone"