Dictionary![]() ![]() di•lat•antPronunciation: (di-lāt'nt, dī-), [key] —adj. 1. dilating; expanding. 2. Physical Chem.exhibiting an increase in volume on being changed in shape, owing to a wider spacing between particles. 3. Petrol.(of rock) exhibiting an increase in volume owing to rearrangement and recrystallization of constituent grains. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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