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leafmore about leaf

leaf


  8  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Leaf  \Leaf\,  n.;  pl  {Leaves}.  [OE.  leef,  lef,  leaf,  AS 
  le['a]f;  akin  to  S.  l?f,  OFries  laf,  D.  loof  foliage,  G. 
  laub,OHG.  loub  leaf,  foliage,  Icel.  lauf,  Sw  l["o]f,  Dan. 
  l["o]v,  Goth.  laufs;  cf  Lith.  lapas.  Cf  {Lodge}.] 
  1.  (Bot.)  A  colored,  usually  green,  expansion  growing  from 
  the  side  of  a  stem  or  rootstock,  in  which  the  sap  for  the 
  use  of  the  plant  is  elaborated  under  the  influence  of 
  light;  one  of  the  parts  of  a  plant  which  collectively 
  constitute  its  foliage. 
 
  Note:  Such  leaves  usually  consist  of  a  blade,  or  lamina, 
  supported  upon  a  leafstalk  or  petiole,  which  continued 
  through  the  blade  as  the  midrib,  gives  off  woody  ribs 
  and  veins  that  support  the  cellular  texture.  The 
  petiole  has  usually  some  sort  of  an  appendage  on  each 
  side  of  its  base,  which  is  called  the  stipule.  The 
  green  parenchyma  of  the  leaf  is  covered  with  a  thin 
  epiderm  pierced  with  closable  microscopic  openings, 
  known  as  stomata. 
 
  2.  (Bot.)  A  special  organ  of  vegetation  in  the  form  of  a 
  lateral  outgrowth  from  the  stem,  whether  appearing  as  a 
  part  of  the  foliage,  or  as  a  cotyledon,  a  scale,  a  bract, 
  a  spine,  or  a  tendril. 
 
  Note:  In  this  view  every  part  of  a  plant,  except  the  root  and 
  the  stem,  is  either  a  leaf,  or  is  composed  of  leaves 
  more  or  less  modified  and  transformed. 
 
  3.  Something  which  is  like  a  leaf  in  being  wide  and  thin  and 
  having  a  flat  surface,  or  in  being  attached  to  a  larger 
  body  by  one  edge  or  end  as  : 
  a  A  part  of  a  book  or  folded  sheet  containing  two  pages 
  upon  its  opposite  sides. 
  b  A  side  division,  or  part  that  slides  or  is  hinged, 
  as  of  window  shutters,  folding  doors,  etc 
  c  The  movable  side  of  a  table. 
  d  A  very  thin  plate;  as  gold  leaf. 
  e  A  portion  of  fat  lying  in  a  separate  fold  or  layer. 
  f  One  of  the  teeth  of  a  pinion,  especially  when  small 
 
  {Leaf  beetle}  (Zo["o]l.),  any  beetle  which  feeds  upon  leaves; 
  esp.,  any  species  of  the  family  {Chrysomelid[ae]},  as  the 
  potato  beetle  and  helmet  beetle. 
 
  {Leaf  bridge},  a  draw-bridge  having  a  platform  or  leaf  which 
  swings  vertically  on  hinges. 
 
  {Leaf  bud}  (Bot.),  a  bud  which  develops  into  leaves  or  a 
  leafy  branch. 
 
  {Leaf  butterfly}  (Zo["o]l.),  any  butterfly  which  in  the  form 
  and  colors  of  its  wings,  resembles  the  leaves  of  plants 
  upon  which  it  rests;  esp.,  butterflies  of  the  genus 
  {Kallima},  found  in  Southern  Asia  and  the  East  Indies. 
 
  {Leaf  crumpler}  (Zo["o]l.),  a  small  moth  ({Phycis 
  indigenella}),  the  larva  of  which  feeds  upon  leaves  of  the 
  apple  tree,  and  forms  its  nest  by  crumpling  and  fastening 
  leaves  together  in  clusters. 
 
  {Leaf  cutter}  (Zo["o]l.),  any  one  of  various  species  of  wild 
  bees  of  the  genus  {Megachile},  which  cut  rounded  pieces 
  from  the  edges  of  leaves,  or  the  petals  of  flowers,  to  be 
  used  in  the  construction  of  their  nests,  which  are  made  in 
  holes  and  crevices,  or  in  a  leaf  rolled  up  for  the 
  purpose.  Among  the  common  American  species  are  {M.  brevis} 
  and  {M.  centuncularis}.  Called  also  {rose-cutting  bee}. 
 
  {Leaf  fat},  the  fat  which  lies  in  leaves  or  layers  within  the 
  body  of  an  animal. 
 
  {Leaf  flea}  (Zo["o]l.),  a  jumping  plant  louse  of  the  family 
  {Psyllid[ae]}. 
 
  {Leaf  frog}  (Zo["o]l.),  any  tree  frog  of  the  genus 
  {Phyllomedusa}. 
 
  {Leaf  green}.(Bot.)  See  {Chlorophyll}. 
 
  {Leaf  hopper}  (Zo["o]l.),  any  small  jumping  hemipterous 
  insect  of  the  genus  {Tettigonia},  and  allied  genera.  They 
  live  upon  the  leaves  and  twigs  of  plants.  See  {Live 
  hopper}. 
 
  {Leaf  insect}  (Zo["o]l.),  any  one  of  several  genera  and 
  species  of  orthopterous  insects,  esp.  of  the  genus 
  {Phyllium},  in  which  the  wings,  and  sometimes  the  legs, 
  resemble  leaves  in  color  and  form  They  are  common  in 
  Southern  Asia  and  the  East  Indies. 
 
  {Leaf  lard},  lard  from  leaf  fat.  See  under  {Lard}. 
 
  {Leaf  louse}  (Zo["o]l.),  an  aphid. 
 
  {Leaf  metal},  metal  in  thin  leaves,  as  gold,  silver,  or  tin. 
 
 
  {Leaf  miner}  (Zo["o]l.),  any  one  of  various  small 
  lepidopterous  and  dipterous  insects,  which  in  the  larval 
  stages,  burrow  in  and  eat  the  parenchyma  of  leaves;  as 
  the  pear-tree  leaf  miner  ({Lithocolletis  geminatella}). 
 
  {Leaf  notcher}  (Zo["o]l.),  a  pale  bluish  green  beetle 
  ({Artipus  Floridanus}),  which  in  Florida,  eats  the  edges 
  of  the  leaves  of  orange  trees. 
 
  {Leaf  roller}  (Zo["o]l.),  the  larva  of  any  tortricid  moth 
  which  makes  a  nest  by  rolling  up  the  leaves  of  plants.  See 
  {Tortrix}. 
 
  {Leaf  scar}  (Bot.),  the  cicatrix  on  a  stem  whence  a  leaf  has 
  fallen. 
 
  {Leaf  sewer}  (Zo["o]l.),  a  tortricid  moth,  whose  caterpillar 
  makes  a  nest  by  rolling  up  a  leaf  and  fastening  the  edges 
  together  with  silk,  as  if  sewn;  esp.,  {Phoxopteris 
  nubeculana},  which  feeds  upon  the  apple  tree. 
 
  {Leaf  sight},  a  hinges  sight  on  a  firearm,  which  can  be 
  raised  or  folded  down 
 
  {Leaf  trace}  (Bot.),  one  or  more  fibrovascular  bundles,  which 
  may  be  traced  down  an  endogenous  stem  from  the  base  of  a 
  leaf. 
 
  {Leaf  tier}  (Zo["o]l.),  a  tortricid  moth  whose  larva  makes  a 
  nest  by  fastening  the  edges  of  a  leaf  together  with  silk; 
  esp.,  {Teras  cinderella},  found  on  the  apple  tree. 
 
  {Leaf  valve},  a  valve  which  moves  on  a  hinge. 
 
  {Leaf  wasp}  (Zo["o]l.),  a  sawfiy 
 
  {To  turn  over  a  new  leaf},  to  make  a  radical  change  for  the 
  better  in  one's  way  of  living  or  doing  [Colloq.] 
 
  They  were  both  determined  to  turn  over  a  new  leaf. 
  --Richardson. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Leaf  \Leaf\,  v.  i.  [imp.  &  p.  p.  {Leafed};  p.  pr  &  vb  n. 
  {Leafing}.] 
  To  shoot  out  leaves;  to  produce  leaves;  to  leave  as  the 
  trees  leaf  in  May 
 
  From  WordNet  r  1.6  [wn]: 
 
  leaf 
  n  1:  the  main  organ  of  photosynthesis  and  transpiration  in  higher 
  plants  [syn:  {leafage},  {foliage}] 
  2:  a  sheet  of  any  written  or  printed  material  [syn:  {folio}] 
  3:  hinged  or  detachable  flat  section  (as  of  a  table  or  door) 
  v  1:  look  through  a  book  or  other  written  material;  "He  thumbed 
  through  the  report";  "She  leafed  through  the  volume" 
  [syn:  {flick},  {flip},  {thumb},  {riffle},  {riff}] 
  2:  turn  over  the  pages  of  "leaf  a  book" 
  3:  turn  over  pages;  "leaf  through  a  book" 
  4:  produce  leaves,  of  plants 
 
  From  U.S.  Gazetteer  (1990)  [gazetteer]: 
 
  Leaf,  MS 
  Zip  code(s):  39456 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  LEAF 
 
    1.  {LISP  Extended  Algebraic  Facility}. 
 
  2.  "LEAF:  A  Language  which  Integrates  Logic,  Equations  and 
  Functions",  R.  Barbuti  et  al  in  Logic  Programming,  Functions 
  Relations  and  Equations,  D.  DeGroot  et  al  eds,  P-H  1986, 
  pp.201-238. 
 
 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  leaf 
 
    (Or  "terminal  node")  In  a  {tree},  a  node 
  which  has  no  {daughter}. 
 
  (1998-11-14) 
 
 
 
  From  Easton's  1897  Bible  Dictionary  [easton]: 
 
  Leaf 
  of  a  tree.  The  olive-leaf  mentioned  Gen.  8:11.  The  barren 
  fig-tree  had  nothing  but  leaves  (Matt.  21:19;  Mark  11:13).  The 
  oak-leaf  is  mentioned  Isa.  1:30;  6:13.  There  are  numerous 
  allusions  to  leaves,  their  flourishing,  their  decay,  and  their 
  restoration  (Lev.  26:36;  Isa.  34:4;  Jer.  8:13;  Dan.  4:12,  14, 
  21;  Mark  11:13;  13:28).  The  fresh  leaf  is  a  symbol  of  prosperity 
  (Ps.  1:3;  Jer.  17:8;  Ezek.  47:12);  the  faded,  of  decay  (Job 
  13:25;  Isa.  1:30;  64:6;  Jer.  8:13). 
 
  Leaf  of  a  door  (1  Kings  6:34),  the  valve  of  a  folding  door. 
 
  Leaf  of  a  book  (Jer.  36:23),  perhaps  a  fold  of  a  roll. 
 
 
  From  V.E.R.A.  --  Virtual  Entity  of  Relevant  Acronyms  13  March  2001  [vera]: 
 
  LEAF 
  Law  Enforcement  Access  Field  (EES,  cryptography) 
 
 




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