Definition of orthomorphic in English:

orthomorphic

adjective

Geography
  • (of a map projection) preserving the correct shape of small areas.

    • ‘Most maps use the Mercator projection, that is an orthomorphic map projection on which parallels and meridians form a rectangular grid, with the scale being exaggerated with increasing distance from the equator.’

Pronunciation

orthomorphic

/ˌɔːθəˈmɔːfɪk/