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turnsole

turnsole


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Turnsole  \Turn"sole`\,  n.  [F.  tournesol  It  tornasole  tornare 
  to  turn  (LL.  tornare)  +  sole  the  sun,  L.  sol.  See  {Turn}, 
  {Solar},  a.,  and  cf  {Heliotrope}.]  [Written  also  {turnsol}.] 
  1.  (Bot.) 
  a  A  plant  of  the  genus  {Heliotropium};  heliotrope;  --  so 
  named  because  its  flowers  are  supposed  to  turn  toward 
  the  sun. 
  b  The  sunflower. 
  c  A  kind  of  spurge  ({Euphorbia  Helioscopia}). 
  d  The  euphorbiaceous  plant  {Chrozophora  tinctoria}. 
 
  2.  (Chem.) 
  a  Litmus.  [Obs.] 
  b  A  purple  dye  obtained  from  the  plant  turnsole.  See 
  def.  1 
  d  . 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Heliotrope  \He"li*o*trope\,  n.  [F.  h['e]liotrope,  L. 
  heliotropium,  Gr  ?;  ?  the  sun  +  ?  to  turn,  ?  turn.  See 
  {Heliacal},  {Trope}.] 
  1.  (Anc.  Astron.)  An  instrument  or  machine  for  showing  when 
  the  sun  arrived  at  the  tropics  and  equinoctial  line 
 
  2.  (Bot.)  A  plant  of  the  genus  {Heliotropium};  --  called  also 
  {turnsole}  and  {girasole}.  {H.  Peruvianum}  is  the  commonly 
  cultivated  species  with  fragrant  flowers. 
 
  3.  (Geodesy  &  Signal  Service)  An  instrument  for  making 
  signals  to  an  observer  at  a  distance,  by  means  of  the 
  sun's  rays  thrown  from  a  mirror. 
 
  4.  (Min.)  See  {Bloodstone} 
  a  . 
 
  {Heliotrope  purple},  a  grayish  purple  color.