Definition of "hydrogeologist" [hydrogeologist]

• A person involved in hydrogeology. (noun)

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• "Among the speakers at Duke's fracking workshop were, from left to right, EPA hydrogeologist David Jewett, ExxonMobil's Michael Parker, and Environmental Defense Fund's chief scientist Steve Hamburg."
• "Yu-Feng Lin, a hydrogeologist at the Illinois State Water Survey, is on a mission to tackle a top national research priority using Mathematica."
• "Pradip Sengupta is a hydrogeologist and a GIS expert."