[mass noun]a variety of asbestos with fine silky fibres which can be woven 高级石棉,石绒
语源
early 17th cent.: from Latin amiantus, from Greek amiantos 'undefiled' (i.e. purified of stains by fire, it being incombustible), from a- 'not' + miainein 'defile'. The spelling was changed from the Latin on the pattern of plant names ending in -anthus, from Greek anthos 'flower'