Definition of dimetric in English:
 dimetric
adjective dʌɪˈmɛtrɪkdīˈmetrik
(in technical drawing) denoting or incorporating a method of showing projection or perspective using a set of three geometrical axes of which two are of the same scale or dimension but the third is of another.
 Example sentencesExamples
-  In fact, the dimetric sphere is no longer represented by a circle, but is represented by an ellipse.
 -  To draw the outline of an object in dimetric projection, two scales are required.
 -  On his drawings you get that (with a high degree of confidence that there are no drawing errors) plus a dimetric view to aid in understanding what the part looks like.
 -  The preparation of dimetric and trimetric scales are also prepared by known techniques.
 -  These are axonometric drawings, commonly called ‘3D’ drawings, and they come in three types: isometric, dimetric and trimetric, which differ only in the angles used for the drawing axes.
 
Origin
  
Mid 19th century: from di-1 'two' + Greek metron 'measure' + -ic.