perpendicular
C1Adjektiv/US /pˌɝpəndˈɪkjəlɚ/ pərp-ənd-ĬKY-əl-ər; UK /pˌɝpəndˈɪkjəlɚ/ pərp-ənd-ĬKY-əl-ər/
Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right line from any point toward the center of the earth.
