Dictionary![]() ![]() aer•a•torPronunciation: (âr'ā-tur, ā'u-rā"-), [key] —n. 1. an apparatus for aerating water or other fluids. 2. a device for introducing air into a bin of wheat or other grain in order to prevent the accumulation of moisture, keeping it free of fungi and insects. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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