blocker

American  

[blok-er] / ˈblɒk ər /

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.

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blocker British  

/ ˈblɒkə /

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

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Etymology

Origin of blocker

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

Example Sentences

“That is likely to cap upside to guidance and provide a ceiling to investors’ enthusiasm around the Azure growth number given that expectations are that it is limited until capacity blockers are removed,” Marok wrote.

From Barron's

As a result, patients going without medications like puberty blockers will not be able to see a doctor and have the specialized medical professional walk them through the process of going off the medication.

From Los Angeles Times

But the justices did not sound inclined to rule on the issue of puberty blockers.

From Los Angeles Times

For those at risk of preterm labor, a PIEZO1 blocker, if developed, could work alongside current medications that relax uterine muscle by limiting calcium entry into cells.

From Science Daily

Among some tech leaders it's seen as, at best, a blocker to smoother digital workflows and AI, at worst, an accident waiting to happen.

From BBC