We don't have synonyms for absciss yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are abscess, abscise and abscises.
(v) :
(intransitive) To separate (as a leaf from a twig) by abscission.
(n) :
Alternative form of abscissa [(geometry) The first of the two terms by which a point is referred to, in a system of fixed rectilinear coordinate (Cartesian coordinate) axes.]
(v) :
(intransitive) To separate (as a leaf from a twig) by abscission.
(n) :
Alternative form of abscissa [(geometry) The first of the two terms by which a point is referred to, in a system of fixed rectilinear coordinate (Cartesian coordinate) axes.]