horizontal


hor·i·zon·tal

adjective \ˌhr-ə-ˈzän-təl, ˌhär-\

: positioned from side to side rather than up and down : parallel to the ground

Full 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-təl-ē\ adverb

First Known Use of HORIZONTAL

1555

hor·i·zon·tal

adjective \ˌhr-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\ adverb

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