Aerometer
an instrument for determining the weight, density, etc., of air or other gases.
noun
an instrument for determining the m-ss or density of a gas, esp air
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- Aeronautical engineering
see under . the branch of engineering that deals with the design, development, testing, and production of aircraft and related systems (aeronautical engineering) and of sp-cecraft, missiles, rocket-propulsion systems, and other equipment operating beyond the earth’s atmosphere (astronautical engineering) historical examples aeronautical engineering has become one of the recognized professions. meteorology charles fitzhugh talman the […]
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the indefinite boundary in the upper atmosphere beyond which the air is too thin for conventional aircraft to operate. noun the region of the upper atmosphere above which aircraft cannot fly
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the study or collection of airmail stamps, cancellations, etc.
- Aerophone
any musical wind instrument. historical examples he felt unwell; he felt angry; if the aerophone refused to work at all to-morrow, he would care nothing. stella fregelius h. rider haggard i think, i really think i have nearly perfected my aerophone. stella fregelius h. rider haggard can you give me a short description of the […]
- Aerosinusitis
inflammation of the nasal sinuses caused by the effect on the sinuses of changes in atmospheric pressure. aerosinusitis aer·o·si·nus·i·tis (âr’ō-sī’nə-sī’tĭs) n. inflammation of the paranasal sinuses caused by a difference between the pressure within the sinus cavities and the ambient pressure. also called barosinusitis.