leading edge

Aeronautics. the edge of an airfoil or propeller blade facing the direction of motion.
something that is or represents the most advanced or innovative aspect of a field, activity, profession, etc.; forefront; vanguard: the leading edge of technology.


leading-edge, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
leading edge (ˈliːdɪŋ)
1.  Compare trailing edge the forward edge of a propeller blade, aerofoil, or wing
2.  electrical engineering the part of a pulse signal that has an increasing amplitude
3.  a.  the leading position in any field
 b.  (as modifier): leading-edge technology

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
The drill has teeth around the leading edge and a hollow center.
The drill bit is a set of teeth around the leading edge of a hollow pipe.
Sometimes the leading edge of one of these storms was a mile-high.
Grasp the shower curtain by its leading edge and gently pull until it is flush
  with the wall.
Image for leading edge
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