Nilometer noun. [nʌɪ'lɒmɪtǝ] E18.
[from NILE + -OMETER, after Greek Neilometrion.]
A graduated pillar or other vertical surface, serving to indicate the height to which the Nile rises during its annual floods.

■ Nilo'metric adjective of or pertaining to a Nilometer or the measurement of the height of the Nile E20.

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