| Word | Definitions | Synonyms |
|---|---|---|
| aerate | (verb) aerate (sewage) so as to favor the growth of organisms that decompose organic matter | Synonyms: activate |
| (verb) impregnate, combine, or supply with oxygen | Synonyms: oxygenate, oxygenise, oxygenize | |
| (verb) expose to fresh air | Synonyms: air, air out | |
| deaerate | (verb) remove air or gas from | Synonyms: de-aerate |