The most common and most likely answer to this crossword clue is the 8 letter word ABSCISSA
A
B
S
C
I
S
S
A
More clues leading to the result ABSCISSA
- Co-ordinate muscles like so, when retiring
- Co-ordinate muscles when thus set up
- Co-ordinate muscles? Crybaby has year off before beginning to act
- A degree — is it the value of a coordinate?
- Co-ordinate one’s appeal after a first degree
- The bottom line – sailor with a relative reportedly imprisoned
- X co-ordinate computed from basics by special algorithm at first
- Coordinate review of classics, basically
- The point of developing brassicas without using a bit of ready-mix
- Co-ordinate with a graduate and investigators going over ship
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ABSCISSA mean?
ABSCISSA noun- 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.