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pyrethrummore about pyrethrum

pyrethrum


  1  definition  found 
 
  From  WordNet  r  1.6  [wn]: 
 
  pyrethrum 
  n  1:  made  of  dried  flower  heads  of  pyrethrum  plants 
  2:  white-flowered  pyrethrum  of  Balkan  area  whose  pinnate  leaves 
  are  white  and  silky-hairy  below;  source  of  an  insecticide; 
  sometimes  placed  in  genus  Chrysanthemum  [syn:  {Dalmatian 
  pyrethrum},  {Dalmatia  pyrethrum},  {Tanacetum 
  cinerariifolium},  {Chrysanthemum  cinerariifolium}] 
  3:  spring-flowering  garden  perennial  of  Asiatic  origin  having 
  finely  divided  aromatic  leaves  and  white  to  pink-purple 
  flowers;  source  of  an  insecticide;  sometimes  placed  in 
  genus  Chrysanthemum  [syn:  {painted  daisy},  {Tanacetum 
  coccineum},  {Chrysanthemum  coccineum}] 
  4:  used  in  former  classifications  for  plants  later  placed  in 
  genus  Chrysanthemum  and  now  often  included  in  genus 
  Tanacetum  [syn:  {Pyrethrum},  {genus  Pyrethrum}] 




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