pulverulent
Concise Oxford English Dictionary © 2008 Oxford University Press:
pulverulent /pʌlˈvɛrʊl(ə)nt/
▶adjective archaic consisting of fine particles; powdery or crumbly.
– origin C17: from L. pulverulentus, from pulvis, pulver- ‘dust’.
'pulverulent' also found in these Oxford entries:

