dilatant

[ dih-leyt-nt, dahy- ]
/ dɪˈleɪt nt, daɪ- /

adjective

dilating; expanding.
Physical Chemistry. exhibiting an increase in volume on being changed in shape, owing to a wider spacing between particles.
Petrology. (of rock) exhibiting an increase in volume owing to rearrangement and recrystallization of constituent grains.

Origin of dilatant

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

OTHER WORDS FROM dilatant

di·lat·an·cy, noun

British Dictionary definitions for dilatant

dilatant
/ (daɪˈleɪtənt, dɪ-) /

adjective

tending to dilate; dilating
physics of, concerned with, or exhibiting dilatancy

noun

something, such as a catheter, that causes dilation