(geometry) An angle that, when added to another referenced angle, produces a right angle.

An angle, one sixtieth (1/60ᵗʰ) of a degree, used by gunners as a measurement of accuracy. One minute of angle is roughly equal to 1 inch at 100 yards distance.

(geometry) An angle formed by two intersecting straight lines.

(geometry) An angle positioned with its vertex at the center of a circle.

(geometry) An angle that, when added to another referenced angle, produces an angle of 180 degrees.

(geometry) Any angle that is not a right angle or multiple of right angles.

(not comparable, geometry) Having a right angle.

(anatomy) An area located on either side of the human back between the lateral borders of the erector spinae muscles and inferior borders of the twelfth rib, so called because the kidney can be felt at this location.

(optics, physics) The angle that a straight line, ray of light, etc., meeting a surface, makes with a normal to the surface at the point of meeting.

A usually hand-held grinder which uses a pair of internal gears to place the rotational axis of the grinding or cutting wheel perpendicular to that of the driving motor.