comparator

• POS: Noun
• HYPHEN: com=par=a=tor

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.