leading edge

[lee-ding]
noun
1.
Aeronautics. the edge of an airfoil or propeller blade facing the direction of motion.
2.
something that is or represents the most advanced or innovative aspect of a field, activity, profession, etc.; forefront; vanguard: the leading edge of technology.

Origin:
1875–80

lead·ing-edge, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
leading edge (ˈliːdɪŋ) [Click for IPA pronunciation guide]
 
n
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
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Leading edge is always a great word to know.
So is pressure. Does it mean:
external force acting on an object or surface parallel to the slope or plane
force per unit area
Example sentences
Water currents increase in speed over the nesting sites, which are situated at
  the leading edge of submarine plateau.
The drill bit is a set of teeth around the leading edge of a hollow pipe.
The leading edge of all this is the showplace manors of the rich and gadget-mad.
Companies in the information-technology field were at the leading edge of a
  revolution.
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