nonfriable

Meaning

1. adjective Not easily broken into small fragments, crumbled, or reduced to powder.
2. noun A material that, when dry, cannot be crumbled, pulverized or reduced to powder by hand pressure.

Similar words

unfriable insoluble unpulverizable nonbreakable uncrushable noncrushable nonpulverized noncrumbly infrangible unpulverized

Often followed by

acm asbestos material