aero-, aer-, aeri-

(Greek: air, mist, wind)

aerodynamic
Designed to reduce or minimize the drag caused by air as an object moves through it or by wind that strikes and flows around an object.

The wings and bodies of airplanes have an aerodynamic shape.

aerodynamic drag
The opposing force encountered by a body moving relative to a fluid; for example, an aircraft in flight displacing the air in its path.
aerodynamics
1. The study of air and other gases in motion, the forces that set them in motion, and the results of such motions.
2. The study of the effects of air in motion on an object; either objects moving through air; such as, aircraft or automobiles, or stationary objects affected by moving air; for example, bridges or tall buildings.

The two primary forces in aerodynamics are lift and drag.

Lift refers to, usually upward, forces perpendicular to the direction of motion of an object traveling through the air; for example, airplane wings are designed so that their movement through the air creates an area of low pressure above the ling and an area of high pressure beneath it. The pressure difference produces the lift needed for flight which is typical of airfoil design.

Drag forces are parallel and opposite to the object's direction of motion and are caused largely by friction.

Large wings can create a significant amount of lift, but they do so at the expense of generating a great deal of drag. Extended "spoilers" on aircraft wings make the the wings capable of high lift even at low speeds; so, low landing speeds can still provide enough lift for a gentle "touchdown".

aerodyne
Any aircraft that is heavier than air and derives its lift chiefly from aerodynamic forces.
aeroelastic, aeroelasticity
1. Pertaining to, or resulting from aerodynamic forces; such as, tests to determine the aeroelastic stress on a building.
2. Deformable by aerodynamic forces; such as, distortion (as from bending) in a structure (as an airplane wing or a building) caused by aerodynamic forces.
aeroembolism
Nitrogen bubbles formed in the blood or tissues during decompression sickness; also known as decompression sickness.
aeroemphysema
Pulmonary emphysema and edema with collection of nitrogen bubbles in the tissues of the lung; due to excessively rapid atmospheric decompression.
aerogastria (s) (noun), aerogastrias (pl)
1. The presence of gas in the stomach; stomach bubbles: Also known as "blocked aerogastria which is caused when the lower esophagu, the canal that connects the throat to the stomach, prevents belching.
2. Distention of the stomach with gas.
aerogel
1. A highly porous solid formed from a gel, such as silica gel, in which the liquid is replaced with a gas.
2. A highly porous solid formed by replacement of liquid in a gel with a gas so that there is little shrinkage.
3. A gel formed by the dispersion of air in a solidified matrix; a solid foam, as Styrofoam.
4. A porous solid formed by replacing the liquid of a gel with a gas; such as, rigid plastic foam.
aerogen
A gas-forming microorganism.
aerogenerator
A device that generates electricity from the kinetic energy produced by wind.
aerogenesis
Production of gas, as with microorganisms.
aerogenic, aerogenous
Producing gas; said of bacteria that liberate free gaseous products.
aerogram
1. A roentgenogram of an organ afer it has been injected with air; also called pneumogram.
2. A letter designed for airmail consisting of a single sheet of lightweight paper that, once written on, can be folded and sealed to form an envelope.
aerogramme
1. A message sent “through the air”, i.e. by radio.
2. An X-ray photograph of an organ injected with air.
3. At one time, a telegram conveyed on part of its journey by an aeroplane (airplane).

Quiz If you would like to take self-scoring quizzes over the words in this thematic unit, then click Aero-Quizzes, so you can evaluate your knowledge about some of these "aero-" words.

Cross references of word groups that are related, directly or indirectly, to: "air, wind": aello-; aeolo-; anemo-; atmo-; austro-; flat-, flatu-; phys-; pneo-, -pnea; pneumato-; turb-; vent-; zephyro-.