[1] : The Collaborative International Dictionary of English v.0.48

dihedral \dihe"dral\, a. gr. di- = di`s- twice + ? a seat,
   bottom, base, fr. ? to sit. cf. diedral.
   1. having two plane faces; as, the dihedral summit of a
      crystal.
      1913 webster

   2. of a kite or an a"eroplane, having wings that make with
      one another a dihedral angle, esp. when the angle between
      the upper sides is less than 180deg.
      webster 1913 suppl.

   3. a"eronautics of wing pairs, inclined at an upward
      angle to each other.
      webster 1913 suppl.

   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.
      1913 webster
see also:
diedral dihedral angle 

Dihedral Angle >> D Words
Dihedral Angle, definition of term: Dihedral Angle
dihedral+angle_pag1.html

Angle >> A Words
Angle, definition of term: Angle
angle_pag1.html

Dihedral >> D Words
Dihedral, definition of term: Dihedral
dihedral_pag1.html

Angle Iron >> A Words
Angle Iron, definition of term: Angle Iron
angle+iron_pag1.html

Angle Bracket >> A Words
Angle Bracket, definition of term: Angle Bracket
angle+bracket_pag1.html

Acute Angle >> A Words
Acute Angle, definition of term: Acute Angle
acute+angle_pag1.html

Angle Of Repose >> A Words
Angle Of Repose, definition of term: Angle Of Repose
angle+of+repose_pag1.html

Angle Of Attack >> A Words
Angle Of Attack, definition of term: Angle Of Attack
angle+of+attack_pag1.html