The geometry of an organism after information about scale, position, and orientation have been removed. (From a morphometric perspective, the word "form" is more precise than "shape", though shape is most commonly used. Form comparison is the rigorous description of the difference between two geometric forms together with their relation according to biological homology - achieving this rigor and determining homology are the major challenges in morphometrics. Geometric form is the formal representation of a boundary curve as a sequence of points connected by straight lines or conic arcs.)(Bookstein et al, 1985).

Alternative form for Shape : Shapes.