rotation rotary motion | the act of rotating as if on an axis, the rotation of the dancer kept time with the music |
axis axis of rotation | the center around which something rotates |
Herschelian telescope off-axis reflector | a reflecting telescope with the mirror slightly tilted to throw the image to the side where it can be viewed |
rotation | a planned recurrent sequence (of crops or personnel etc.), crop rotation makes a balanced demand on the fertility of the soil, the manager had only four starting pitchers in his rotation |
axis axis vertebra | the nd cervical vertebra, serves as a pivot for turning the head |
axis | a straight line through a body or figure that satisfies certain conditions |
coordinate axis | one of the fixed reference lines of a coordinate system |
x-axis | the horizontal axis in a plane coordinate system |
y-axis | the vertical axis in a plane coordinate system |
z-axis | the third axis in a -dimensional coordinate system |
major axis | the longest axis of an ellipse or ellipsoid, passes through the two foci |
semimajor axis | one-half the major axis of an ellipse, the distance from the center of an ellipse to one end |
minor axis | the shorter or shortest axis of an ellipse or ellipsoid |
semiminor axis | one-half the minor axis of an ellipse |
principal axis optic axis | a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted, in a normal eye the optic axis is the direction in which objects are seen most distinctly |
optic axis | in a doubly refracting crystal, the line in the direction of which no double refraction occurs, a crystal may have either one or two optic axes |
rotation revolution gyration | a single complete turn (axial or orbital), the plane made three rotations before it crashed, the revolution of the earth about the sun takes one year |
dextrorotation clockwise rotation | rotation to the right |
levorotation counterclockwise rotation | rotation to the left |
axial rotation axial motion roll | rotary motion of an object around its own axis, wheels in axial rotation |
orbital rotation orbital motion | motion of an object in an orbit around a fixed point, satellites in orbital rotation |
bloc axis | a group of countries in special alliance |
Axis | in World War II the alliance of Germany and Italy in which later included Japan and other nations, the Axis opposed the Allies in World War II |
sound pressure instantaneous sound pressure | the difference between the instantaneous pressure at a point in a sound field and the average pressure at that point |
axis | the main stem or central part about which plant organs or plant parts such as branches are arranged |
rotation | (mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the origin |
instantaneous instant(a) | occurring with no delay, relief was instantaneous, instant gratification |