əˈkanˌthīt, ˈakənˌ- noun
( -s )
Etymology: International Scientific Vocabulary acanth- + -ite; from the thornlike shape of its crystals; originally formed as German akanthit
: a mineral Ag 2 S consisting of a silver sulfide like argentite but crystallizing in slender prisms (sp. gr. 7.2-7.3)