| Definition/Meaning | Word/Phrase |
|---|
| descent down a nearly vertical surface by using a doubled rope that is coiled around the body and attached to some higher point |
abseil
|
| opposition to the flow of sound through a surface; acoustic resistance is the real component of acoustic impedance and acoustic reactance is the imaginary component |
acoustic impedance
,
acoustic reactance
,
acoustic resistance
|
| (acoustics) the pressure exerted on a surface normal to the direction of propagation of a sound wave |
acoustic radiation pressure
|
| (mineral extraction) a surface-active chemical used in flotation process to increase the attraction to a specific mineral |
activating agent
|
| friction between a body and the surface on which it moves (as between an automobile tire and the road) |
adhesive friction
,
grip
,
traction
|
| nearly horizontal passage from the surface into a mine |
adit
|
| collect on a surface |
adsorb
|
| coating of substance on surface of solid or liquid |
adsorption
|
| surface of substance, accumulation on |
adsorption
|
| accumulation of molecules of a gas to form a thin film on the surface of a solid |
adsorption
,
surface assimilation
|
| imaginary line connecting points on the Earth's surface where the magnetic declination is zero |
agonic line
|
| attack by armed planes on a surface target |
air attack
,
air raid
|
| fungus with a whitish often circular cap and a white pore surface and small pores and a white central stalk; found under conifers; edible but not popular |
Albatrellus ovinus
,
sheep polypore
|
| surface lift where riders hold a bar and are pulled up the hill on their skis |
Alpine lift
,
T-bar
,
T-bar lift
|
| elevation above the Earth's surface |
altitude
|
| elevation especially above sea level or above the earth's surface |
altitude
,
height
|
| metamorphism that occurs deep under the earth's surface; changes simple minerals into complex minerals |
anamorphism
|
| angle that a line makes with a line perpendicular to the surface at the point of incidence |
angle of incidence
,
incidence angle
|
| angle between a reflected ray and a line perpendicular to the reflecting surface at the point of incidence |
angle of reflection
|
| angle between a refracted ray and a line perpendicular to the surface between the two media at the point of refraction |
angle of refraction
|
