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paraboloidmore about paraboloid

paraboloid


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Paraboloid  \Pa*rab"o*loid\  (-loid),  n.  [Parabola  +  -oid:  cf  F. 
  parabolo["i]de.]  (Geom.) 
  The  solid  generated  by  the  rotation  of  a  parabola  about  its 
  axis;  any  surface  of  the  second  order  whose  sections  by 
  planes  parallel  to  a  given  line  are  parabolas. 
 
  Note:  The  term  paraboloid  has  sometimes  been  applied  also  to 
  the  parabolas  of  the  higher  orders  --Hutton. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Conoid  \Co"noid\,  n.  [Gr.  ?  conical;  ?  cone  +  ?  from:  cf  F. 
  cono["i]de.] 
  1.  Anything  that  has  a  form  resembling  that  of  a  cone. 
 
  2.  (Geom.) 
  a  A  solid  formed  by  the  revolution  of  a  conic  section 
  about  its  axis;  as  a  parabolic  conoid,  elliptic 
  conoid,  etc.;  --  more  commonly  called  {paraboloid}, 
  {ellipsoid},  etc 
  b  A  surface  which  may  be  generated  by  a  straight  line 
  moving  in  such  a  manner  as  always  to  meet  a  given 
  straight  line  and  a  given  curve,  and  continue  parallel 
  to  a  given  plane.  --Math.  Dict. 
 
  From  WordNet  r  1.6  [wn]: 
 
  paraboloid 
  n  :  a  surface  having  parabolic  sections  parallel  to  a  single 
  coordinate  axis  and  elliptic  sections  perpendicular  to 
  that  axis 




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