horizontal
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horizontal
[hor-ĭ-zon´tal]1. parallel to the plane of the horizon.
2. spreading from one individual to another; see horizontal transmission.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
horizontal
(hôr′ĭ-zŏn′tl, hŏr′-)adj.
1. Of, relating to, or near the horizon.
2.
a. Parallel to or in the plane of the horizon.
b. At right angles to a vertical line.
3. Occupying or restricted to the same level in a hierarchy: a horizontal study of verbal ability; a horizontal transfer by an employee.
4. Medicine Of or relating to transmission of infection by contact with or physical proximity to an infected individual or fomite.
n.
Something, such as a line, plane, or object, that is horizontal.
hor′i·zon·tal′i·ty (-zən-tăl′ĭ-tē), hor′i·zon′tal·ness n.
hor′i·zon′tal·ly adv.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.