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alkaloid

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alkaloid


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Alkaloid  \Al"ka*loid\  ([a^]l"k[.a]*loid),  n.  (Chem.) 
  An  organic  base,  especially  one  of  a  class  of  substances 
  occurring  ready  formed  in  the  tissues  of  plants  and  the 
  bodies  of  animals. 
 
  Note:  Alkaloids  all  contain  nitrogen,  carbon,  and  hydrogen, 
  and  many  of  them  also  contain  oxygen.  They  include  many 
  of  the  active  principles  in  plants;  thus  morphine  and 
  narcotine  are  alkaloids  found  in  opium. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Alkaloid  \Al"ka*loid\  ([a^]l"k[.a]*loid),  Alkaloidal 
  \Al`ka*loid"al\  ([a^]l`k[.a]*loid"al),  a.  [Alkali  +  -oid:  cf  F. 
  alcalo["i]de.] 
  Pertaining  to  resembling,  or  containing,  alkali. 
 
  From  WordNet  r  1.6  [wn]: 
 
  alkaloid 
  n  :  natural  nitrogen-containing  bases  found  in  plants 




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