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dilatant

[dih-leyt-nt, dahy-] /dɪˈleɪt nt, daɪ-/
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
1835-1845
1835-45; < Latin dīlātant- (stem of dīlātāns), present participle of dīlātāre to dilate; see -ant
Related forms
dilatancy, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for dilatancy

dilatancy

/daɪˈleɪtənsɪ; dɪ-/
noun
1.
a phenomenon caused by the nature of the stacking or fitting together of particles or granules in a heterogeneous system, such as the solidification of certain sols under pressure, and the thixotropy of certain gels

dilatant

/daɪˈleɪtənt; dɪ-/
adjective
1.
tending to dilate; dilating
2.
(physics) of, concerned with, or exhibiting dilatancy
noun
3.
something, such as a catheter, that causes dilation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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