<B>aerodynamic heating,</B><DL COMPACT><DD> the heating of the leading edge or surface of an object moving through the atmosphere at high speed, caused by friction with the air. </DL>
<A NAME="aerodynamicist">
<B>aerodynamicist, </B>noun.<DL COMPACT><DD> a person who studies aerodynamics. </DL>
<A NAME="aerodynamics">
<B>aerodynamics, </B>noun.<DL COMPACT><DD> the branch of physics that deals with the motion of air and other gases around objects, and of forces acting on both bodies passing through air and other gases. <BR> <I>Ex. Rockets are powerful research tools ... in aerodynamics (Science News).</I> </DL>
<A NAME="aerodyne">
<B>aerodyne, </B>noun.<DL COMPACT><DD> any heavier-than-air aircraft. </DL>
<A NAME="aeroelastic">
<B>aeroelastic. </B>adjective.<DL COMPACT><DD> of or having to do with aeroelasticity. </DL>
<A NAME="aeroelasticity">
<B>aeroelasticity, </B>noun.<DL COMPACT><DD><B> 1. </B>the movement or deformation of an aircraft component or other elastic structure under the stress of aerodynamic forces. <DD><B> 2. </B>the branch of mechanics that deals with such movement or deformation. </DL>
<A NAME="aeroembolism">
<B>aeroembolism, </B>noun.<DL COMPACT><DD> a harmful blocking of blood vessels by nitrogen bubbles in the blood and body tissues, caused by a sudden reduction of air pressure, as in skin divers and other divers rising too rapidly, tunnel workers leaving pressurized caissons, and aviators ascending rapidly to high altitudes. </DL>
<A NAME="aeroengine">
<B>aero-engine, </B>noun.<DL COMPACT><DD> (British.) an aircraft engine. </DL>
<A NAME="aerofoil">
<B>aerofoil, </B>noun.<DL COMPACT><DD> (British.) an airfoil. </DL>
<A NAME="aerogel">
<B>aerogel, </B>noun.<DL COMPACT><DD> a colloidal solution of a solid in which a liquid is replaced by a gas or by air, thus producing a high degree of porosity. </DL>
<A NAME="aerogen">
<B>aerogen, </B>noun.<DL COMPACT><DD> any one of various species of gas-producing bacteria. </DL>
<A NAME="aerogenerator">
<B>aerogenerator, </B>noun.<DL COMPACT><DD> a generator driven by the wind. </DL>
<A NAME="aerogenic">
<B>aerogenic, </B>adjective.<DL COMPACT><DD><B> 1. </B>gas-producing. <BR> <I>Ex. aerogenic bacteria.</I> <DD><B> 2. </B>having the form of air or gas; aeriform. <BR> <I>Ex. The inhalable, or aerogenic, form of the vaccine gives greater immunity than does the injected form (Science News Letter).</I> </DL>
<A NAME="aerogram">
<B>aerogram, </B>noun.<DL COMPACT><DD><B> 1. </B>a radiogram. <DD><B> 2. </B>the record made by an aerograph. <DD><B> 3. </B><B>=air letter.</B> </DL>
<A NAME="aerogramme">
<B>aerogramme, </B>noun. <B>=air letter.</B></DL>
<A NAME="aerograph">
<B>aerograph, </B>noun.<DL COMPACT><DD> an instrument carried high into the upper atmosphere by an airplane, balloon, or kite to record pressure, temperature, humidity, and other atmospheric conditions. </DL>
<A NAME="aerographer">
<B>aerographer, </B>noun.<DL COMPACT><DD> a person who studies aerographics or describes atmospheric conditions. </DL>
<B>aerographics, </B>noun.<DL COMPACT><DD> the study of the air or atmospheric conditions. </DL>
<A NAME="aerography">
<B>aerography, </B>noun.<DL COMPACT><DD> description of the air or atmospheric conditions. </DL>
<A NAME="aerolite">
<B>aerolite, </B>noun.<DL COMPACT><DD> a meteorite made up entirely or almost entirely of stone. </DL>
<A NAME="aerolitic">
<B>aerolitic, </B>adjective.<DL COMPACT><DD> (U.S.) made up entirely or almost entirely of stone, as a meteorite. </DL>
<A NAME="aerologic">
<B>aerologic, </B>adjective.<DL COMPACT><DD> of or having to do with aerology. adv. <B>aerologically.</B> </DL>
<A NAME="aerological">
<B>aerological, </B>adjective. <B>=aerologic.</B> <I>Ex. Through aerological investigations scientists have learned much about the atmosphere and the weather (J. V. Finch).</I> </DL>
<A NAME="aerologist">
<B>aerologist, </B>noun.<DL COMPACT><DD> a person who studies aerology. </DL>
<A NAME="aerology">
<B>aerology, </B>noun.<DL COMPACT><DD><B> 1. </B>the branch of meteorology that deals with the properties and phenomena of the upper atmosphere. <DD><B> 2. </B><B>=meteorology.</B> </DL>
<A NAME="aeromagnetic">
<B>aeromagnetic, </B>adjective.<DL COMPACT><DD> having to do with magnetism in, or the action of magnetic force on, elements of the atmosphere, especially in the upper layers. <BR> <I>Ex. an aeromagnetic survey.</I> </DL>
<A NAME="aeromancy">
<B>aeromancy, </B>noun.<DL COMPACT><DD><B> 1. </B>divination by the air or atmospheric phenomena. <DD><B> 2. </B>(Obsolete.) the forecasting of the weather. </DL>
<A NAME="aeromechanic">
<B>aeromechanic, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> <B>1. </B>a mechanic who works on aircraft. <DD><B> 2. </B>an expert in aeromechanics. <DD><I>adj. </I> <B>=aeromechanical.</B> </DL>
<A NAME="aeromechanical">
<B>aeromechanical, </B>adjective.<DL COMPACT><DD> of or having to do with aeromechanics. </DL>
<A NAME="aeromechanics">
<B>aeromechanics, </B>noun.<DL COMPACT><DD> the branch of physics that deals with the motion (aerodynamics) and equilibrium (aerostatics) of air and other gases. </DL>
<A NAME="aeromedical">
<B>aeromedical, </B>adjective.<DL COMPACT><DD> of or having to do with aeromedicine. </DL>
<B>aerometeorograph, </B>noun.<DL COMPACT><DD> a meteorograph used in aircraft and other flying objects. </DL>
<A NAME="aerometer">
<B>aerometer, </B>noun.<DL COMPACT><DD> an instrument for determining the weight or density of air and other gases. </DL>
<A NAME="aerometric">
<B>aerometric, </B>adjective.<DL COMPACT><DD> having to do with aerometry or an aerometer. </DL>
<A NAME="aerometry">
<B>aerometry, </B>noun.<DL COMPACT><DD> the science of pneumatics. </DL>
<A NAME="aeronaut">
<B>aeronaut, </B>noun.<DL COMPACT><DD><B> 1. </B>the pilot of an airship or balloon; balloonist. <DD><B> 2. </B>a person who travels in an airship or balloon. <DD><B> 3. </B>the pilot of an airplane. </DL>
<B>aeronautical, </B>adjective.<DL COMPACT><DD> (U.S.) of or having to do with aeronautics or aeronauts. <BR> <I>Ex. aeronautical engineering, aeronautical meteorology.</I> adv. <B>aeronautically.</B> </DL>
<A NAME="aeronautics">
<B>aeronautics, </B>noun.<DL COMPACT><DD> the science or art having to do with the design, manufacture, and operation of aircraft. </DL>
<A NAME="aeroneurosis">
<B>aeroneurosis, </B>noun.<DL COMPACT><DD> a nervous disorder affecting aviators, usually caused by excessive flying and characterized by such symptoms as gastric distress, irritability, and insomnia. </DL>
<A NAME="aeronomical">
<B>aeronomical, </B>adjective.<DL COMPACT><DD> of or having to do with aeronomy. </DL>
<A NAME="aeronomist">
<B>aeronomist, </B>noun.<DL COMPACT><DD> a person who studies aeronomy. </DL>
<A NAME="aeronomy">
<B>aeronomy, </B>noun.<DL COMPACT><DD> the science that deals with the physical and chemical conditions of the upper atmosphere, especially the changes occurring as the result of radiation from outer space. </DL>
<A NAME="aerootitismedia">
<B>aero-otitis media,</B><DL COMPACT><DD> inflammation of the middle ear caused by differences between the air pressure in the cavity of the middle ear and that of the atmosphere that occur from sudden changes of altitude in flying. </DL>
<A NAME="aeropause">
<B>aeropause, </B>noun.<DL COMPACT><DD><B> 1. </B>the limit of man's penetration in the atmosphere at any particular time. <DD><B> 2. </B>the upper limit of manned airborne flight. </DL>
<A NAME="aerophagia">
<B>aerophagia, </B>noun.<DL COMPACT><DD> an abnormal swallowing of air,sometimes associated with hysteria. </DL>
<A NAME="aerophagy">
<B>aerophagy, </B>noun. <B>=aerophagia.</B></DL>
<A NAME="aerophilatelist">
<B>aerophilatelist, </B>noun.<DL COMPACT><DD> a collector of airmail stamps. </DL>
<A NAME="aerophilately">
<B>aerophilately, </B>noun.<DL COMPACT><DD> the business or hobby of collecting and trading airmail stamps. </DL>
<A NAME="aerophobia">
<B>aerophobia, </B>noun.<DL COMPACT><DD> a morbid fear of air or gases, especially of drafts. </DL>
<A NAME="aerophore">
<B>aerophore, </B>noun.<DL COMPACT><DD> a portable respirator for the use of firemen, miners, and others, containing chemicals designed to revive exhaled air passing through it or to make smoke-filled air breathable. </DL>
<B>aeroscope, </B>noun.<DL COMPACT><DD> an instrument for collecting dust, bacteria, spores, or other contaminants from the air for microscopic investigation. </DL>
<A NAME="aeroscopic">
<B>aeroscopic, </B>adjective.<DL COMPACT><DD> having to do with exercising aeroscopy. </DL>
<A NAME="aeroscopy">
<B>aeroscopy, </B>noun.<DL COMPACT><DD> (Zoology.) perception or observation of atmospheric conditions, as by insects and snails. </DL>
<A NAME="aeroshell">
<B>aeroshell, </B>noun.<DL COMPACT><DD> a parachutelike device used to decelerate a spacecraft making a soft landing. </DL>
<A NAME="aerosiderite">
<B>aerosiderite, </B>noun.<DL COMPACT><DD> a meteorite consisting mainly of metallic iron. </DL>
<A NAME="aerosiderolite">
<B>aerosiderolite, </B>noun.<DL COMPACT><DD> a meteorite containing both iron and stone. </DL>
