Hypertext Webster Gateway: "Hydrography"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
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.
From WordNet (r) 1.7 (wn)
hydrography
n : the science of the measurement and description and mapping
of the surface waters of the earth with special reference
to navigation
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