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blocker

[ blok-er ]

noun

  1. a person or thing that blocks.
  2. Football. a player whose assignment or special skill is blocking. block.
  3. Biochemistry. a substance that inhibits the physiological action of another substance, as the beta blocker propranolol that interferes with neurotransmitters in the sympathetic nervous system.


blocker

/ ˈɒə /

noun

  1. a person or thing that acts as a block
  2. physiol an agent that blocks a physiological function, such as the transport of an ion across an ion channel
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of blocker1

Middle English word dating back to 1200–50; block, -er 1
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Example Sentences

Examples have not been reviewed.

Rachel Reeves said the airport expansion was vital for kickstarting economic growth and promised to "stop blockers getting in the way of development".

From

Lercanidipine is a calcium channel blocker, which works by making it easier for the heart to pump blood around the body.

From

But he accused "tired" Tory councils of "putting on the blockers" and "holding Britain back".

From

The government has made boosting the number of new homes a key priority, promising to back the "builders not blockers".

From

Puberty blockers work by suppressing the release of hormones and can be prescribed to children questioning their gender.

From

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