hydrography

• POS: Noun
• HYPHEN: hy=drog=ra=phy

CIDE DICTIONARY

hydrography, n. [Hydro-, 1 + -graphy: cf. F. hydrographie.].

•  The art of measuring and describing the sea, lakes, rivers, and other waters, with their phenomena.  [1913 Webster]
•  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]

OXFORD DICTIONARY

hydrography, n. the science of surveying and charting seas, lakes, rivers, etc.

Derivative

hydrographer n. hydrographic adj. hydrographical adj. hydrographically adv.

ROGET THESAURUS

hydrography

Ocean

N sea, ocean, main, deep, brine, salt water, waves, billows, high seas, offing, great waters, watery waste, vasty deep, wave, tide, hydrography, hydrographer, Neptune, Poseidon, Thetis, Triton, Naiad, Nereid, sea nymph, Siren, trident, dolphin, oceanic, marine, maritime, pelagic, pelagian, seagoing, hydrographic, bathybic, cotidal, at sea, on sea, afloat.