Alumina-ka weyn ee hal-abuurka ah waa crystal budo cad ah oo lagu sameeyay calcination heerkulka sare ee aluminium hydroxide ama alumina warshadeed oo leh macdanta khaaska ah.
Flake alumina waxay leedahay sifooyin gudaha ah oo aad u wanaagsan iyo sifooyin gaar ah.