# abscissa

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Related to abscissa: Abscissa of convergence

## abscissa:

see Cartesian coordinatesCartesian coordinates
[for René Descartes], system for representing the relative positions of points in a plane or in space. In a plane, the point P is specified by the pair of numbers (x,y
.

## abscissa

[ab′sis·ə]
(mathematics)
One of the coordinates of a two-dimensional coordinate system, usually the horizontal coordinate, denoted by x.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

## abscissa abscissa: P, any point; NP, abscissa
In the plane Cartesian coordinate system, the horizontal coordinate of a point on a plane; the x-coordinate, obtained by measuring the distance from the point to the y-axis along a line parallel to the x-axis.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

## abscissa

the horizontal or x-coordinate of a point in a two-dimensional system of Cartesian coordinates. It is the distance from the y-axis measured parallel to the x-axis
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

## abscissa

(mathematics)
The horizontal or x coordinate on an (x, y) graph; the input of a function against which the output is plotted.

The vertical or y coordinate is the "ordinate".

See Cartesian coordinates.
References in periodicals archive ?
Caption: Figure 3--Relationship between the Coefficient of Variation (%) for the weight of the marketable cormels and plot size in Basic Units, to determine the abscissa value at the maximum curvature point ([X.sub.o]).
(The abscissa axis shows the frequency in Hz and the ordinate axis shows V/(rad/sec)).
From TDC firing (0 crank angle) to BDC (180 crank angle) in the abscissa, the contact is around 180[degrees] as shown in the ordinate.
Similarly, in the log-log coordinate system, [p.sub.D] is calculated based on the definition of dimensionless pressure derivative [p'.sub.D]=[dp.sub.D]/d([t.sub.D][e.sup.2S]) A group of pressure derivative type curves (Figure 3) are drawn, with [t.sub.D][e.sup.2S] * [[p'.sub.D].sup.as] as ordinate against [t.sub.D][e.sup.2S] as abscissa and [b.sub.D][e.sup.-2S] as the curve parameter.
Assuming a spectrum band with a unique SPR peak, the FWHM quantity (green line) is given by the abscissas (x-coordinates) of the spectrum equivalent to half-height (HH), which is half the distance between the SPR maximum absorbance and P3.
We set abscissa c = 1, [C.sub.2] = -[10.sup.-5] as the error constant of the method and use relations (2.3) and (2.5) for satisfying order condition.
In the paper "Stability and Multiscroll Attractors of Control Systems via the Abscissa," E.-C.
The pitch angle will particularly exist throughout [-[pi], [pi]] once the abscissa [x.sup.+.sub.10] > 7113 m.
where Id is the edge identifier in the graph database, Dp is the curvilinear abscissa, [delta] represents the travel direction, which can be 1 if the edge is walked forward (from A to B) and -1 otherwise (from B to A), k is the scale factor that calibrates the step length model, [beta] is the misalignment between the walking direction and the pointing direction of the handheld device, w is the particle weight, and p and t refer, respectively, to the particle and time.
Taking the liquid volume flow rate and PE_H as the abscissa and the ordinate respectively, the piecewise linear interpolation model is established and denoted as PH model.
Using the pH as the abscissa and the OD value of bacterial suspension as the ordinate, we obtained the growth curves of the test bacteria at various pH values (10).

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