semiconductor
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
A material that conducts electricity better than an insulator but not as well as a metal, and whose conductivity can be controlled.
Usage notes
Semiconductors are the basis of transistors, since their conductivity can effectively be switched on and off.
Test yourself
Which word fits the gap? "Silicon is the _____ most commonly used to manufacture computer chips."
Answer: semiconductor
In your own words, what does "semiconductor" mean?
A material that conducts electricity better than an insulator but not as well as a metal, and whose conductivity can be controlled.
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