abscissa
n . 橫坐標
橫坐標
abscissa n 1 :
the value of a coordinate on the horizontal axis Abscissa \
Ab *
scis "
sa \,
n .;
E .
pl . {
Abscissas },
L .
pl .
{
Absciss [
ae ]}. [
L .,
fem .
of abscissus ,
p .
p .
of absindere to cut of .
See {
Abscind }.] (
Geom .)
One of the elements of reference by which a point ,
as of a curve ,
is referred to a system of fixed rectilineal co ["
o ]
rdinate axes .
Note :
When referred to two intersecting axes ,
one of them called the axis of abscissas ,
or of X ,
and the other the axis of ordinates ,
or of Y ,
the abscissa of the point is the distance cut off from the axis of X by a line drawn through it and parallel to the axis of Y .
When a point in space is referred to three axes having a common intersection ,
the abscissa may be the distance measured parallel to either of them ,
from the point to the plane of the other two axes .
Abscissas and ordinates taken together are called co ["
o ]
rdinates . --
OX or PY is the abscissa of the point P of the curve ,
OY or PX its ordinate ,
the intersecting lines OX and OY being the axes of abscissas and ordinates respectively ,
and the point O their origin .
[
1913 Webster ]
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