ˈzīləˌtīl noun
( -s )
Etymology: German xylotil, from xyl- + Greek tilos something plucked, from tillein to pluck
: a mineral approximately (Mg,Fe) 3 Fe 2 Si 7 O 20 .11H 2 O that is a hydrous iron magnesium silicate, occurs in delicately fibrous forms, and is derived from alteration of asbestos or chrysolite