Englishfor English speakers
illuminating
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adjective
(= enlightening)
tending to increase knowledge or dissipate ignorance
an enlightening glimpse of government in action
an illuminating lecture
fiber
Noun
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Fibers are thread-like structures found in textiles or vegetables
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Fiber is vegetable fibers eaten as part of a diet.
Eating more fiber will help you stay healthy.
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Fiber is thin glass fibers used to transmit computer data using pulses of light.