designed to operate or operating at a high speed: a high-speed drill.
Photography. suitable for minimum light exposure: high-speed film; a high-speed lens.


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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
1.  employing or requiring a very short exposure time: high-speed film
2.  recording or making exposures at a rate usually exceeding 50 and up to several million frames per second
3.  working, moving, or operating at a high speed

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Example sentences
It will continue to expand as major manufacturers develop a range of high-speed
  trains using technology based on non-fossil fuels.
Twenty-nine universities across the country have started a project to extend
  their high-speed networks to surrounding communities.
Zeroing in on the cause of high-speed jets issuing from energetic galactic
High-speed camera snapshots may have pinpointed a spot in the brain that serves
  as a marker for depression.
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