perpendicular

perpendicular /ˌpɚpənˈdɪkjəlɚ/ adjective
perpendicular
/ˌpɚpənˈdɪkjəlɚ/
adjective
Britannica Dictionary definition of PERPENDICULAR
: going straight up or to the side at a 90 degree angle from another line or surface
— compare parallel

— perpendicularly

adverb