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dihedral


dihedral


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Dihedral  \Di*he"dral\,  a. 
  1.  Of  a  kite  or  an  a["e]roplane,  having  wings  that  make  with 
  one  another  a  dihedral  angle,  esp.  when  the  angle  between 
  the  upper  sides  is  less  than  180[deg]. 
 
  2.  (A["e]ronautics)  Of  wing  pairs,  inclined  at  an  upward 
  angle  to  each  other 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Dihedral  \Di*he"dral\,  a.  [Gr.  di-  =  di`s-  twice  +  ?  a  seat, 
  bottom,  base,  fr  ?  to  sit  Cf  {Diedral}.] 
  Having  two  plane  faces;  as  the  dihedral  summit  of  a  crystal. 
 
  {Dihedral  angle},  the  angular  space  contained  between  planes 
  which  intersect.  It  is  measured  by  the  angle  made  by  any 
  two  lines  at  right  angles  to  the  two  planes.