ˈwiləˌmīt noun
( -s )
Etymology: German willemit, from Willem (William) I died 1843 king of the Netherlands + German -it -ite
: a mineral Zn 2 SiO 4 consisting of zinc silicate, occurring in hexagonal prisms and in massive or granular forms, and varying in color from white or greenish yellow to green, reddish, and brown