smog
part of speech
noun (smog — uncountable; smogs — rare)
meaning for a pupil
Dirty, smoky, foggy air over a city, caused by pollution from cars, factories and fires, often mixed with fog. tree →
sense in the lessons
In science and geography lessons smog is a key example of air pollution: it makes breathing hard, especially for people with asthma. The word was made from "smoke" + "fog". The Great Smog of London in the past killed thousands and led to clean air laws. Today many big cities issue smog warnings. Phrases: a smog warning, thick smog, photochemical smog.
examples
- The city was covered in thick brown smog. tree →
- On smog days, children with asthma should stay inside. tree →
- Smog comes from car fumes and factory smoke. tree →
- London once had a terrible smog that lasted for days. tree →
- We couldn't see the mountains through the smog. tree →
- Cleaner cars help reduce smog. tree →
note
Uncountable: "smog is", "some smog". A blend word: smoke + fog (like brunch = breakfast + lunch). Not the same as plain fog, which is just tiny water drops and is not polluted.
In the corpora
Trees and pragmatics
Every meaning and example of «smog» parsed by Mova, each sentence with its dependency tree and frames.