/tawrt vuy"tuyt, thawrt-/ , n.
a scandium yttrium silicate mineral occurring in grayish-green orthorhombic crystals.
[ 1910-15; Thortveitit, named after Olaus Thortveit, 20th-century Norwegian mineralogist; see -ITE 1 ]
/tawrt vuy"tuyt, thawrt-/ , n.
a scandium yttrium silicate mineral occurring in grayish-green orthorhombic crystals.
[ 1910-15; Thortveitit, named after Olaus Thortveit, 20th-century Norwegian mineralogist; see -ITE 1 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012