en nitrogen oxide (n, substance)
― IsA ⟶
Weight: 2.0
en pollutant (n, substance) Source: Open Multilingual WordNet
en nitrogen oxide (n, substance)
― IsA ⟶
Weight: 2.0
en oxide (n, substance) Source: Open Multilingual WordNet
en nox (n)
― IsA ⟶
Weight: 1.0
en nitrogen oxide Source: French Wiktionary