Definition of planar in English:

planar

Syllabification: pla·nar
Pronunciation: /ˈplānər
 
/

adjective

Mathematics
Of, relating to, or in the form of a plane: planar surfaces
More example sentences
  • The resulting graph is planar, that is can be drawn in the plane without any edges crossing.
  • Clearly the centroid of the planar region surrounded by the polygon is at point A.
  • This contained work on planar and spherical trigonometry originally done much earlier in about 1464.

Definition of planar in:

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retention of juvenile features in the adult animal