leading-edge

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

leading-edge, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
leading edge (ˈliːdɪŋ)
 
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

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