dilatant

[dih-leyt-nt, dahy-]
adjective
1.
dilating; expanding.
2.
Physical Chemistry. exhibiting an increase in volume on being changed in shape, owing to a wider spacing between particles.
3.
Petrology. (of rock) exhibiting an increase in volume owing to rearrangement and recrystallization of constituent grains.

Origin:
1835–45; < Latin dīlātant- (stem of dīlātāns), present participle of dīlātāre to dilate; see -ant

dilatancy, noun
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World English Dictionary
dilatant (daɪˈleɪtənt, dɪ-)
 
adj
1.  tending to dilate; dilating
2.  physics of, concerned with, or exhibiting dilatancy
 
n
3.  something, such as a catheter, that causes dilation

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Example sentences
As such it would not exhibit dilatant behavior and thus would generate positive excess pore pressures.
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