It is commonly called alumina, and may also be called aloxide, aloxite, or alundum depending on particular forms or applications. It commonly occurs in its crystalline polymorphic phase Î±-Al 2 O 3, in which it composes the mineral corundum, varieties of which form the precious gemstones ruby and sapphire.
rain cloud. (meteorology). Any cloud from which rain falls; a popular term having no technical denotation. 1  Facebook. 2  Twitter.
Definitions for cloudburstËklaÊdËbÉrst. Here are all the possible meanings and translations of the word cloudburst. Princeton's WordNet(0.00 / 0 votes)Rate this definition: downpour, cloudburst, deluge, waterspout, torrent, pelter, soaker(noun) a heavy rain.