What is the meaning of Abscissa?

The first of the two terms by which a point is referred to, in a system of fixed rectilinear coordinate (Cartesian coordinate) axes.

The horizontal line representing an axis of a Cartesian coordinate system, on which the abscissa (sense above) is shown.

inflection of abscissus:

  1. nominative/vocative feminine singular
  2. nominative/accusative/vocative neuter plural

nominative/vocative feminine singular

nominative/accusative/vocative neuter plural

ablative feminine singular of abscissus

abscissa (first of two coordinates)

Alternative spelling of abskissa; abscissa

Source: wiktionary.org