horizontal

adjective

1. 1

   Perpendicular to the vertical; parallel to the plane of the horizon; level, flat.

   horizontal lines

   I also claim the combination of the separator shaft with the shoe, and with the pitman, for the purpose of imparting to it a recriprocating horizontal movement, and a vibratory movement on its axis at the same time,...

   Power is derived from a British United Traction Limited "A"-type 150-h.p. six-cylinder horizontal diesel engine; this drives through a fluid flywheel, and thence through a free wheel unit to a four-speed epicyclic gearbox.

   […] a pair of pauldrons with the light horizontal bar which in later years developed into the high neckguard of the sixteenth century; numbers of gauntlets, visors of helmets, and other pieces, the handling of which is a sheer joy […]

2. 2

   Relating to horizontal markets

3. 3

   archaicPertaining to the horizon.

   As when the Sun new ris'n / Looks through the Horizontal misty Air

4. 4

   Involving wines of the same vintages but from different wineries.

5. 5

   Having the two notes sound successively.

6. 6

   Relating to sexual intercourse.

   horizontal tango

   Comparing a man who inspires you intellectually and makes you laugh with a guy who fulfils all your horizontal desires means you’re not comparing like with like.

7. 7

   Being or relating to the transmission of organisms between biotic and/or abiotic members of an ecosystem that are not in a parent-progeny relationship.

   Infectious agents may spread by horizontal transmission.

noun

1. 1

   A horizontal component of a structure.

2. 2

   Horizon.

3. 3

   A Tasmanian shrub or small tree whose main trunk tends to lean over and grow horizontally, Anodopetalum biglandulosum

Forms

plural

horizontals

comparative

more horizontal

superlative

most horizontal