Definition:
The verb "de-aerate" means to remove air or gas from a substance. This is often done to improve the quality or stability of that substance.
In scientific contexts, "de-aerate" is often related to liquids or solutions. For example, in chemistry, you might de-aerate a solution before conducting an experiment to ensure that the results are not affected by air bubbles.
De-aeration (noun): The process of removing air or gas.
Example: The de-aeration of the liquid was necessary before it could be used in the experiment.
De-aerated (adjective): Describing something that has had air or gas removed.
Example: The de-aerated mixture was much more stable than the original.
While "de-aerate" primarily refers to the removal of air or gas, it can sometimes imply the improvement of a material's quality or functionality by eliminating unwanted air.
There aren’t specific idioms or phrasal verbs that directly relate to "de-aerate," but you might encounter phrases like "let the air out" in more casual contexts, though it doesn't carry the same technical meaning.
In summary, "de-aerate" is a technical term used mainly in specific contexts to mean the removal of air or gas from a substance.