D defs.my
Entry 1 sense Webster, 1913

Orthogonally

· Or·thog·o·nal·ly · IPA
01 adv. Perpendicularly; at right angles; as, a curve cuts a set of curves orthogonally.
  1. 1.
    Perpendicularly; at right angles; as, a curve cuts a set of curves orthogonally.