-āt ə nt adjective
Etymology: Latin dilatant-, dilatans dilating, present participle of dilatare to dilate
1. : having the property of increasing in volume when changed in shape because of an increase of the space between the particles
2. : increasing in viscosity and setting to a solid as a result of deformation by expansion, pressure, or agitation — opposed to thixotropic
dilatant quicksands