See pitch.
The front-to-back movement of the engraving spindle.
The vertical axis of a two-dimensional plot in Cartesian coordinates.
The vertical axis in a chart. It displays the range of values possible for the dependent variable to take.
By convention this is the vertical axis on a graph.
A cephalometric indicator of the vertical and horizontal coordinates of mandibular growth expressed in degrees of the inferior facial angle formed by the intersection of the sella-gnathion plane with the Frankfort horizontal plane. ... (05 Mar 2000) ... 
See x-axis.
Type: Term Definitions: 1. a cephalometric indicator of the vertical and horizontal coordinates of mandibular growth expressed in degrees of the inferior facial angle formed by the intersection of the sella-gnathion plane with the Frankfort horizontal plane.
Referred to as Y-Axis and Y Axis; An imaginary line passing top-to-bottom through the center of the plan view. The left-right direction on the diagram sheet is when it is held in the position to read the text. This imaginary line is used for referance point in both 2D and 3D drawings/drafting.
[n] - the vertical axis in a plane coordinate system
The vertical axis on a graph. The line going from top to bottom.
North South movement (up and down) is in y
The vertical axis in the plane. See also: Axis, x axis.
The vertical number line on a coordinate plane 
noun the vertical axis in a plane coordinate system
(DOD) A vertical axis in a system of rectangular coordinates; that line on which distances above and below (north or south) the reference line are marked, especially on a map, chart, or graph.
Also called(in a plane Cartesian coordinate system) the axis, usually vertical, along which the ordinate is measured and from which the abscissa is measured. See diag. under · (in a three-dimensional Cartesian coordinate system) the axis along which values of y are measured and at which both x and z equal zero.
The vertical axis in a coordinate plane.