A friable callus is a collection of tissue in excess of normal that can be scraped or crumbled away.
The sense of friable is "can be easily grinded".
It can be crushed into dust
Yes, any non-friable form of asbestos can become friable. Some kinds can become friable simply through aging, weathering, or normal use. Others become friable if worked with power tools, producing dust that is "friable" if allowed to accumulate without being captured and removed from the work area.
Materials containing asbestos are considered to be friable if they can be easily crumbled, pulverized, or reduced to powder by hand pressure when dry. Friable asbestos poses a higher risk of releasing harmful fibers into the air compared to non-friable asbestos-containing materials.
Friable asbestos is material that contains asbestos fibers and that can be crumbled into dust in the hand without the use of tools.
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A friable colon is one that is easily upset or irritated. It can become swollen and could lead to colon disease.
"Friable" describes the condition of tissue that is easily broken or torn. That can be the result of infection or damage to the tissue from injury or disease. For example, the skin of a scleroderma patient that it is very taut and "stretched thin" can be easily damaged. That tissue would be called friable.
My dictionary says: "Easily crumbled, brittle" Friable means - easily reduced to powder. It is most often used in the context of surgery to describe tissue that is diseased/weak/thin.
A friable callus is a callus formation that has grown with the cells further apart. When a callus is not friable, it is dense and compact and when it is used to regenerate plant tissue, it grows into a lump and doesn't grow to a viable plant. A friable callus, however, allows the regenerating tissue to grow suspensions.