horizontal

hor·i·zon·tal

adjective \ˌhȯr-ə-ˈzän-t^əl, ˌhär-\

Definition of HORIZONTAL

1

a : of, relating to, or situated near the horizon

b : parallel to, in the plane of, or operating in a plane parallel to the horizon or to a baseline : level <horizontal distance> <a horizontal engine>

2

: relating to, directed toward, or consisting of individuals or entities of similar status or on the same level <horizontal mergers> <horizontal hostility>

— horizontal noun

— hor·i·zon·tal·i·ty \-ˌzän-ˈta-lə-tē\ noun

— hor·i·zon·tal·ly \-ˈzän-t^əl-ē\ adverb

First Known Use of HORIZONTAL

1555

hor·i·zon·tal

adjective \ˌhȯr-ə-ˈzänt-^əl, ˌhär-\   (Medical Dictionary)

Medical Definition of HORIZONTAL

1

: relating to or being a transverse plane or section of the body

2

: relating to or being transmission (as of a disease) by physical contact or proximity in contrast with inheritance—compare vertical

—hor·i·zon·tal·ly \-^əl-ē\ (audio pronunciation) adverb