Search Result for "hydrography": 
Wordnet 3.0

NOUN (1)

1. the science of the measurement and description and mapping of the surface waters of the earth with special reference to navigation;


The Collaborative International Dictionary of English v.0.48:

Hydrography \Hy*drog"ra*phy\, n. [Hydro-, 1 + -graphy: cf. F. hydrographie.] 1. The art of measuring and describing the sea, lakes, rivers, and other waters, with their phenomena. [1913 Webster] 2. That branch of surveying which embraces the determination of the contour of the bottom of a harbor or other sheet of water, the depth of soundings, the position of channels and shoals, with the construction of charts exhibiting these particulars. [1913 Webster]
WordNet (r) 3.0 (2006):

hydrography n 1: the science of the measurement and description and mapping of the surface waters of the earth with special reference to navigation