Word Study
smog
WORDNET DICTIONARY
Noun smog has 1 sense
- smog(n = noun.state) smogginess - air pollution by a mixture of smoke and fog; Array is a kind of air pollution
Derived form adjective smoggy1
OXFORD DICTIONARY
smog, n. fog intensified by smoke.
Derivative
smoggy adj. (smoggier, smoggiest).
Etymology
portmanteau word
For further exploring for "smog" in Webster Dictionary Online