pulverulent

[puhl-ver-yuh-luhnt, -ver-uh-luhnt]
adjective
1.
consisting of dust or fine powder.
2.
crumbling to dust or powder.
3.
covered with dust or powder.

Origin:
1650–60; < Latin pulverulentus dusty, equivalent to pulver- (stem of pulvis) dust + -ulentus -ulent

pulverulence, noun
pulverulently, adverb
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World English Dictionary
pulverulent (pʌlˈvɛrʊlənt)
 
adj
consisting of, covered with, or crumbling to dust or fine particles
 
[C17: from Latin pulverulentus, from pulvis dust]
 
pul'verulence
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
These oxides generally occur in a pulverulent or earthy form.
Lesions of the respiratory tract and the lungs caused by pulverulent antimony trioxide.
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