Definition/Meaning  Word/Phrase 
any of various rotating shafts that serve as axes for larger rotating parts 
arbor
,
mandrel
,
mandril
,
spindle

one of the coordinates in a system of coordinates that locates a point on a plane or in space by its distance from two lines or three planes respectively; the two lines or the intersections of the three planes are the coordinate axes 
Cartesian coordinate

ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point 
circle

erect tropical Asian shrub whose small lateral leaflets rotate on their axes and jerk up and down under the influence of sunshine 
Codariocalyx motorius
,
Desmodium gyrans
,
Desmodium motorium
,
semaphore plant
,
telegraph plant

shape that is generated by rotating an ellipse around one of its axes 
ellipsoid of revolution
,
spheroid

telescope whose mounting has only two axes of motion, one parallel to the Earth's axis and the other one at right angles to it 
equatorial

visual representation of the relations between certain quantities plotted with reference to a set of axes 
graph
,
graphical record

point of intersection of coordinate axes; where the values of the coordinates are all zero 
origin

very short shallowly creeping North American fern usually growing on cliffs or walls and having dark glossy leaf axes 
Pellaea atropurpurea
,
purple rock brake

any of the four areas into which a plane is divided by two orthogonal coordinate axes 
quadrant

(mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the origin 
rotation

(mathematics) a function that changes the position or direction of the axes of a coordinate system 
transformation
