powderiness(n = noun.attribute) fineness - having a very fine texture; "the fineness of the sand on the beach"
is a kind of smoothness
Derived form adjective powdery1
N powderiness, pulverulence, sandiness, efflorescence, friability, powder, dust, sand, shingle, sawdust, grit, meal, bran, flour, farina, rice, paddy, spore, sporule, crumb, seed, grain, particle, limature, filings, debris, detritus, tailings, talus slope, scobs, magistery, fine powder, flocculi, smoke, cloud of dust, cloud of sand, cloud of smoke, puff of smoke, volume of smoke, sand storm, dust storm, pulverization, comminution, attenuation, granulation, disintegration, subaction, contusion, trituration, levigation, abrasion, detrition, multure, limitation, tripsis, filing, mill, arrastra, gristmill, grater, rasp, file, mortar and pestle, nutmeg grater, teeth, grinder, grindstone, kern, quern, koniology, powdery, pulverulent, granular, mealy, floury, farinaceous, branny, furfuraceous, flocculent, dusty, sandy, sabulous, psammous, arenose, arenarious, arenaceous, gritty, efflorescent, impalpable, lentiginous, lepidote, sabuline, sporaceous, sporous, pulverizable, friable, crumbly, shivery, pulverized, attrite, in pieces.