The phrase "air expulsion" is correct and usable in written English.
It can be used in contexts related to physics, biology, or engineering, particularly when discussing the release of air from a system or organism.
Example: "The air expulsion from the balloon was rapid, causing it to fly across the room."
Alternatives: "air release" or "air discharge".
Using an X-ray computerized tomography (CT) scanner and a novel CT-compatible core holder, a series of experiments to study air and oil expulsion from rock samples by capillary imbibition of water in a three-dimensional (3-D) geometry were conducted.
An additional two or more end holes aid in the expulsion of air and are sometimes used to attach decorative silk tassles.
Respiratory diseases are those that interfere with the intake and expulsion of air and the exchange of oxygen for carbon dioxide in the lungs.
"No, I instinctively arrived at the voice, Caesar's urgency to express his thought, plus the expulsion of air through the larynx created the voice.
All articulatory movements, including the initial expulsion of air from the lungs, may be made with greater or less vigour, giving rise to louder or softer speech or to greater loudness on one part of what is said.
Aspirated stops (that is, stops pronounced with an accompanying forceful expulsion of air) are very rare but are found in Tarascan (Purépecha) and a few Otomanguean languages (for example, Mazatec and Otomí); Jicaquean also has them.
Consonant sounds such as the English voiceless stops p, t, and k at the beginning of words (e.g., "pat," "top," "keel") are also aspirated because they are pronounced with an accompanying forceful expulsion of air.
The guiding principle was that while humor can fail to produce the expulsion of air and muscle contractions known as laughter, forced laughter always works because it transcends thought.
Formulations were left to stand 2 days before use, to allow expulsion of air bubbles.
In particular, the tracheae were not partially or fully collapsed by the expansion of water upon freezing, which could allow gas exchange in the frozen state, and also suggests that the burst of CO2 seen in caterpillars when freezing [25] is not necessarily a result of a mechanically-induced expulsion of air from the tracheal system.
