corundum (HyperDic hyper-dictionary)

English > 1 sense of the word *corundum*:
NOUN	substance	corundum, corundom	very hard mineral used as an abrasive

corundum > pronunciation
Sounds	kerah'ndahm
Rhymes	abolitionism ... zirconium: 557 rhymes with ahm...

English > *corundum*: 1 sense > noun 1, substance
Meaning	Very hard mineral used as an abrasive.
Synonym	corundom
Narrower	alumina, aluminum oxide, aluminium oxide	Any of various forms of aluminum oxide occurring naturally as corundum
	ruby	A transparent deep red variety of corundum
	sapphire	A precious transparent stone of rich blue corundum valued as a gemstone
Broader	mineral	Solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Substance of	emery	A hard grey-black mineral consisting of corundum and either hematite or magnetite
Spanish	corindón, corundom
Catalan	corindó, corundom

HyperDic: corundum