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Pronunciation of 

optical fiber

view main entry for optical fibernoun [countable/uncountable]  
American English pronunciation: optical fiberClick to listen to the pronunciation of optical fiber

charticle

a news article that consists of a chart … and only has a small amount of text

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electron

a part of an atom that moves around the nucleus (=centre) and has a negative electrical charge

Open Dictionary

never event

an event that should never occur in a healthcare setting …

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