horizon

(redirected from radar horizon)
Also found in: Dictionary, Thesaurus, Financial, Encyclopedia, Wikipedia.
Related to radar horizon: Over the horizon radar

horizon

 [hŏ-ri´zon]
a specific anatomic stage of embryonic development, of which 23 have been defined, beginning with the unicellular zygote (fertilized egg) and ending 7 to 9 weeks later with the beginning of the fetal stage.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

horizon

any layer of soil that is distinguishable when soil is examined in vertical sections.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
(6.) Since most radar signals travel in a straight line, this means that a receiver beyond the radar horizon cannot detect a transmitter.
"Correlating overlapping radar can be done, you just need to adjust the update rate." But the E-2C or AWACS may see a track that is not within a ship's radar horizon, for example.
But now that China has apparently developed multiple warhead technology (perhaps, in part, through spying), a TMD system could be inexpensively overwhelmed by multipie-warhead Chinese missiles and probably also by cruise missiles flying below the radar horizon of the TMD system.