coplanarity

Definitions

1. The state or characteristic of being within the same plane.
   countable, uncountable
2. The state or characteristic of orbiting a central celestial object within the same orbital plane.
   countable, uncountable

Equivalents

Examples

“Gliese 876 affords us by far our most detailed and accurate map of any extrasolar planetary system in the solar neighborhood, and […] it is reassuring to see⟳ a kinship in the most fundamental property of system coplanarity.”

CEFR level