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visualmore about visual


  2  definitions  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Visual  \Vis"u*al\,  a.  [L.  visualis,  from  visus  a  seeing,  sight: 
  cf  F.  visuel.  See  {Vision}.] 
  1.  Of  or  pertaining  to  sight;  used  in  sight;  serving  as  the 
  instrument  of  seeing;  as  the  visual  nerve. 
  The  air,  Nowhere  so  clear,  sharpened  his  visual  ray. 
  2.  That  can  be  seen;  visible.  [R.] 
  {Visual  angle}.  (Opt.)  See  under  {Angle}. 
  {Visual  cone}  (Persp.),  a  cone  whose  vertex  is  at  the  point 
  of  sight,  or  the  eye. 
  {Visual  plane},  any  plane  passing  through  the  point  of  sight. 
  {Visual  point},  the  point  at  which  the  visual  rays  unite;  the 
  position  of  the  eye. 
  {Visual  purple}  (Physiol.),  a  photochemical  substance,  of  a 
  purplish  red  color,  contained  in  the  retina  of  human  eyes 
  and  in  the  eyes  of  most  animals.  It  is  quickly  bleached  by 
  light,  passing  through  the  colors,  red,  orange,  and 
  yellow,  and  then  disappearing.  Also  called  {rhodopsin}, 
  and  {vision  purple}.  See  {Optography}. 
  {Visual  ray},  a  line  from  the  eye,  or  point  of  sight. 
  {Visual  white}  (Physiol.),  the  final  product  in  the  action  of 
  light  on  visual  purple.  It  is  reconverted  into  visual 
  purple  by  the  regenerating  action  of  the  choroidal 
  {Visual  yellow}  (Physiol.),  a  product  intermediate  between 
  visual  purple  and  visual  white,  formed  in  the 
  photochemical  action  of  light  on  visual  purple. 
  From  WordNet  r  1.6  [wn]: 
  adj  1:  relating  to  or  using  sight;  "ocular  inspection";  "an  optical 
  illusion";  "visual  powers";  "visual  navigation"  [syn: 
  {ocular},  {optic},  {optical}] 
  2:  able  to  be  seen;  "be  sure  of  it  give  me  the  ocular  proof"- 
  Shakespeare;  "a  visual  presentation";  "a  visual  image" 
  [syn:  {ocular}] 

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