nitrogen dioxide

1. 1.

   a highly poisonous brown gas (NO2)

   Broaderdioxidegas

Questions about nitrogen dioxide

What does nitrogen dioxide mean?

nitrogen dioxide means "a highly poisonous brown gas (NO2)".

Is nitrogen dioxide a common word?

nitrogen dioxide is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.