navigation(redirected from dead reckoning)
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The act of charting the course of a ship or other vehicle, or of guiding or directing anything in a comparable way.
[L. navigatio, fr. navigo, to guide a ship, fr. navis, ship, + ago, to lead]
Farlex Partner Medical Dictionary © Farlex 2012
navigation(năv″ĭ-gā′shŭn) [L. navigatio, voyage]
1. Determining, calculating, and guiding an action in which an object, e.g., a catheter or a surgical instrument, is directed to a particular anatomic position, typically with radiological guidance..
2. The ability to direct one's movements through space, i.e., through both familiar and new environments.
Medical Dictionary, © 2009 Farlex and Partners
orientationa process of direction-finding. Many animals are capable of navigation particularly those performing long MIGRATIONS. Birds are now known to find their way home (see HOMING).by means of the sun and stars, in addition to landmarks. Bees, and other ARTHROPODS, use the pattern of polarized light in the sky (from which they deduce the direction of the sun) and other organisms may use chemical gradients to trace a route. For example, salmon find their specific river for breeding purposes by following a scent in from the sea.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005