rectilinear

/ˌrɛktəˈlɪniər/
adjective
  1. Moving in or consisting of a straight line or lines.
    • The surveyor used rectilinear measurements to map the boundary of the property.
    • The car's rectilinear motion along the test track was smooth and steady.
    • In geometry class, we studied rectilinear figures like squares and rectangles.
What does "rectilinear" mean? | whatsthatwordmean | whatsthatwordmean