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heptad

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heptad


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Heptad  \Hep"tad\,  n.  [L.  heptas  the  number  seven  Gr  ?,  ?,  fr 
  "epta`  seven.]  (Chem.) 
  An  atom  which  has  a  valence  of  seven  and  which  can  be 
  theoretically  combined  with  substituted  for  or  replaced  by 
  seven  monad  atoms  or  radicals;  as  iodine  is  a  heptad  in 
  iodic  acid.  Also  used  as  an  adjective. 
 
  From  WordNet  r  1.6  [wn]: 
 
  heptad 
  n  :  the  cardinal  number  that  is  the  sum  of  six  and  one  [syn:  {seven}, 
  {7},  {VII},  {sevener},  {septet}] 




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