The word "Abscissae" refers to points on the X-axis of a graph or coordinate system. Synonyms for this term include x-coordinates, horizontal coordinates, ordinate axes and abscissa values. These terms are used interchangeably to describe values that indicate the distance between a point and the vertical axis of a graph. The use of synonyms is helpful in academic and technical writing because they allow writers to avoid repetition and add variety to their language. Whether you're a mathematician, engineer, or statistician, using synonyms for abscissae helps to convey precise meaning and avoid confusion in your work.