any naturally occurring or synthetically produced containing alkali-metal or alkaline-earth-metal ions, as a feldspar, zeolite, or beryl.
a silicate in which some of the silicon in the tetrahedral unit sio4 has been replaced by aluminium
any of several north american plants belonging to the genus heuchera, of the saxifrage family, especially h. americana, having mottled foliage and greenish-white flowers. the of any of these plants, used as an astringent. noun any of several north american plants of the saxifragaceous genus heuchera, having small white, reddish, or green bell-shaped flowers and […]
variant of , especially before a vowel.
the natural or synthetic oxide of aluminum, al 2 o 3 , occurring in nature in a pure crystal form as corundum. historical examples the garnet is but as hard as quartz, and is a silicate of alumina with lime and a little iron. the a b c of mining charles a. bramble it is […]
- Alumina cement
a quick-setting cement with a large bauxite content.
- Alumina trihydrate
. a crystalline, water-insoluble powder, al(oh) 3 or al 2 o 3 ⋅3h 2 o, obtained chiefly from bauxite: used in the manufacture of gl-ss, ceramics, and printing inks, in dyeing, and in medicine as an antacid and in the treatment of ulcers.