rectangular
1. [ adjective ] having four right angles
Examples:

"a rectangular figure twice as long as it is wide"

Related terms: angular
2. [ adjective ] having a set of mutually perpendicular axes; meeting at right angles
Synonyms: orthogonal
Examples:

"wind and sea may displace the ship's center of gravity along three orthogonal axes" "a rectangular Cartesian coordinate system"

Related terms: perpendicular
Similar spelling:   rectangularity
  rectangle
  reactant
  reactance