normal aeration

normal aeration

[′nȯr·məl e′rā·shən]
(geology)
The complete renewal of soil air to a depth of 8 inches (20 centimeters) about once each hour.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Normal aeration of the external auditory canals with intact bony and cartilaginous boundaries.