(a.) Easily crumbled, pulverized, or reduced to powder.
Thesaurus Entries
breakable, brittle, brittle as glass, crackable, crimp, crisp, crispy, crumbly, crump, crushable, delicate, fissile, flimsy, fracturable, fragile, frail, frangible, lacerable, pulverizable, pulverulent, scissile, shatterable, shattery, shivery, splintery, triturable, vulnerable
