(programming) An identifier that is substituted by a pre-defined value prior to compilation.

plural of symmetric matrix

A tree of the genus Platanus,

Synonym of sycamore maple

(algebraic geometry, theoretical physics) A relationship between Calabi-Yau manifolds where two such manifolds look very different geometrically but are nevertheless equivalent when employed as extra dimensions of string theory.

plural of symbolic logic

phonetic symbolism

When being turned through a full revolution, the number of times a shape looks the same as in the initial orientation.

plural of sympathetic ink

(pathology) Extreme anxiety concerning physical symptoms: illness anxiety disorder.