browse words by letter
a b c d e f g h i j k l m n o p q r s t u v w x y z

magnesiummore about magnesium

magnesium


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Magnesium  \Mag*ne"si*um\,  n.  [NL.  &  F.  See  {Magnesia}.]  (Chem.) 
  A  light  silver-white  metallic  element,  malleable  and  ductile, 
  quite  permanent  in  dry  air  but  tarnishing  in  moist  air.  It 
  burns,  forming  (the  oxide)  magnesia,  with  the  production  of  a 
  blinding  light  (the  so-called  magnesium  light)  which  is  used 
  in  signaling,  in  pyrotechny,  or  in  photography  where  a  strong 
  actinic  illuminant  is  required.  Its  compounds  occur 
  abundantly,  as  in  dolomite,  talc,  meerschaum,  etc  Symbol  Mg 
  Atomic  weight,  24.4.  Specific  gravity,  1.75. 
 
  {Magnesium  sulphate}.  (Chem.)  Same  as  {Epsom  salts}. 
 
  From  WordNet  r  1.6  [wn]: 
 
  magnesium 
  n  :  a  light  silver-white  ductile  bivalent  metallic  element;  in 
  pure  form  it  burns  with  brilliant  white  flame;  occurs 
  naturally  only  in  combination  (as  in  magnesite  and 
  dolomite  and  carnallite  and  spinel  and  olivine)  [syn:  {Mg}, 
  {atomic  number  12}] 
 
  From  Elements  database  20001107  [elements]: 
 
  magnesium 
  Symbol:  Mg 
  Atomic  number:  12 
  Atomic  weight:  24.312 
  Silvery  metallic  element  belonging  to  group  2  of  the  periodic  table 
  (alkaline-earth  metals).  It  is  essential  for  living  organisms,  and  is  used 
  in  a  number  of  light  alloys.  Chemically  very  reactive,  it  forms  a 
  protective  oxide  coating  when  exposed  to  air  and  burns  with  an  intense 
  white  flame.  It  also  reacts  with  sulphur,  nitrogen  and  the  halogens.  First 
  isolated  by  Bussy  in  1828. 
 
 




more about magnesium