wurtzite adjective 1noun 1forms 1 adjective1 •Of or pertaining to wurtzite crystal structure, a hexagonal crystal system named after the mineral wurtzite.A new family of semiconductors has been synthesized for the first time in the form of wurtzite phase nanocrystals of Cu2ZnAS4−x and CuZn2AS4. noun1 •A dark brown zinc iron sulfide mineral ((Zn,Fe)S), a form of sphalerite. formswurtzites