Ancient Greek mathematician (6)
![Ross](/clue/static/ross-mug.min.png)
'ancient greek mathematician' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for euclid that I've seen before include "Greek mathematician, d. mid-3rd century BC" , "Ancient Greek mathematician" , "Geometrician of the 3rd century BC" , "Greek mathematician c. three hundred BC" , "Alexandrian mathematician" .)
(Other definitions for archimedes that I've seen before include "Greek mathematician ('Eureka')" , "Ancient Greek scientist (of buoyancy principle)" , "'Eureka' scientist" , "Ancient Greek mathematician/inventor" , "Greek physicist" .)