Etymology: ge- + navigation
: navigation by reckoning the course from other places on the earth's surface (as in piloting and dead reckoning)
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/jee'oh nav'i gay"sheuhn/, n.
navigation by means of observations of terrestrial features.
[1880-85; GEO- + NAVIGATION]
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geonavigation, geonomic, -nomysee geo-.
Useful english dictionary. 2012.