What is "asbestiform"

Asbestiform \As*bes"ti*form\, a. [L. asbestus + -form.] Having the form or structure of asbestus.

a. having a particular kind of fibrosity in which fibers have high tensile strength and flexibility

Asbestiform is a crystal habit. It describes a mineral that grows in a fibrous aggregate of high tensile strength, flexible, long, and thin crystals that readily separate.