Word Study
comparator
CIDE DICTIONARY
comparator, n. [L., a comparer.].
An instrument or machine for comparing anything to be measured with a standard measure; -- applied especially to a machine for comparing standards of length. [1913 Webster]
OXFORD DICTIONARY
comparator, n. Engin. a device for comparing a product, an output, etc., with a standard, esp. an electronic circuit comparing two signals.
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