the cutting edge
US /ðə ˈkʌtɪŋ ɛdʒ/
UK /ðə ˈkʌtɪŋ ɛdʒ/
1.
the latest or most advanced stage in the development of something
:
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Their new software is at the cutting edge of technology.
•
The company is known for its research at the cutting edge of medical science.