(astrology) Any of the three star signs Aquarius, Gemini and Libra.

plural of air sign

Alternative form of there's no such thing as a free lunch

atmospheric air specially cleaned so that it contains less than 0.1 ppm of hydrocarbon impurities; it then is usable in laboratory procedures such as versions of gas chromatography in which sufficiently pure air may serve as a carrier gas.

Any engine used to propel an aircraft, including jet engines and rocket engines etc.

(US) A sweet, non-carbonated drink made with artificial flavors.

A fad or ideology that is adopted unquestioningly, ignoring its hidden dangers or disadvantages.

plural of air duct

present participle of air out

plural of aide-mémoire