Englishfor English speakers
classical
Adjective
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Classical ideas or styles are those that were very common at a time in the past and sometimes continue into the present.
Classical theories in physics can't explain certain observations, which has led scientists to come up with new theories.
analog
Adjective
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A variable used in a technical system is continuous, and does not have one of a finite number of different values.
analog
Noun
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something that has an analogy to something else