/val"euhn ti nuyt', -tee'nuyt/ , n.
a mineral, antimony trioxide, Sb 2 O 3 , formed by the oxidation of various minerals containing antimony and occurring in the form of white orthorhombic crystals.
[ 1855-60; Valentinit, named after Basil Valentine, 15th-century German alchemist; see -ITE 1 ]