Hydrographer
Nuttall's Standard Dictionary of the English Language · 1890 · p. 97
hi-drog'-ra-fer, s. one who describes or draws maps of the sea, lakes, or other waters.
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The American Dictionary and Cyclopedia (1910)
Chamber's Etymological of the English Language (1895)
The Century Dictionary: The Encyelopedic Lexicon of the English Language (1887)
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