Noah Webster
Amianthoid
AMIANTH'OID, noun [Amianth and Gr. form.]
A mineral which occurs in tufts, composed of long capillary filaments, flexible and very elastic; more flexible than the fibers of asbestus, but stiffer and more elastic than those of amianth. The color is olive green, or greenish white.
AMIANTH'OID, adjective Resembling amianth in form.