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| ablate |
to wear away or otherwise remove (a surface), as by heat or erosion. [1/2 definitions] |
| ABO system |
a classification system for the inherited antigens found on the surface of human red blood cells, which determine compatibility for blood transfusions. |
| abrade |
to rub or wear down a surface by friction. [1/4 definitions] |
| abrasive |
causing abrasion to a physical surface or irritation to one's senses. [1/3 definitions] |
| abut |
to touch along a common line or surface; come in contact (often fol. by "on", "upon," or "against"). [1/2 definitions] |
| adsorb |
to gather (a gas or liquid) to a surface. (Cf. absorb.) |
| adsorption |
the condensation or adhesion of a gas, vapor, liquid, or dissolved substance on the surface of a solid or liquid. (Cf. absorption.) |
| aerodynamic |
of a contour or surface, offering the minimum of resistance when moving through air. [1/2 definitions] |
| airfield |
a level surface, usu. with one or more paved runways, on which aircraft land and take off; airport. |
| airfoil |
any aircraft part or surface, such as a wing or rudder, designed to utilize aircurrents to aid in propelling, lifting, and controlling movement. |
| air hole |
an open place in the frozen surface of a lake, pond, or stream. [1/3 definitions] |
| albedo |
in physics, the degree to which particles such as neutrons are reflected by a surface that they strike. [1/2 definitions] |
| allover |
covering, or repeated over, an entire surface. |
| angle of incidence |
the angle that the line of movement of a body or of radiation, meeting a surface, makes with a line that is at right angles to the surface at the point of meeting. |
| anodize |
to cover a metal surface with a protective oxide electrolytically, the surface acting as the anode. |
| antipodes |
places directly opposite each other on the surface of the earth, as the North Pole and the South Pole. |
| aquaplane |
a board pulled by a speedboat and used to carry a standing rider along the surface of the water. [1/3 definitions] |
| area |
the amount of expanse of a flat or curved surface. [1/4 definitions] |
| ballpoint |
a pen that has a small ball in its tip which transfers ink from a reservoir to the writing surface; ballpoint pen. |
| barbicel |
on feathers, a minute hairlike projection from one barbule, which attaches to others of its kind, maintaining the integrity of the feather as a single surface. |
| basalt |
a dense, fine-grained, dark-colored igneous rock created by lava flow that is rich in minerals containing magnesium and iron. The most common igneous rock on the Earth's surface due to its high abundance on the ocean floor. |
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