Sonde

• (v. t.) That which is sent; a message or messenger; hence, also, a visitation of providence; an affliction or trial.
Found on http://thinkexist.com/dictionary/meaning/sonde/

Sonde

[electronics] A Sonde (Sonde is French for probe) is a water quality monitoring instrument, that may be stationary or may move up and down a water column, measuring, but not limited to, the following water attributes; temperature, conductivity, salinity, dissolved oxygen, pH, turbidity, and depth. ...
Found on http://en.wikipedia.org/wiki/Sonde_(electronics)
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