comparator
UK[kəmˈpærətə]US[kəmˈpærətər]
n
A device for comparing something measurable with a reference or standard.
n
In computing, a circuit or device that compares two signals or items of data and indicates the result of the comparison.
Morpheme Breakdown
com
pare
ator
com
with, together, jointly
pare
make ready, prepare, arrange
ator
a person or thing that does something
Etymology
The word "comparator" is a modern scientific and technical term built directly from Latin components. Its core is the Latin verb "comparare", meaning "to pair, match, or bring together for examination", which itself is formed from "com-" (together) and "parare" (to make ready, to set). The suffix "-ator" was added to create an agent noun, designating a thing that performs the action. Thus, the literal construction is "a thing that brings together (for matching)". This logic perfectly describes its modern function: a device that brings two signals or values together to assess their similarity or difference, evolving from the abstract concept of preparation and pairing into a precise technical instrument.
Analysis
Structure: com + pare + ator
- com: Latin origin, a prefix meaning "with, together, jointly".
- pare: Latin origin, from the root meaning "make ready, prepare, arrange". In this context, it carries the sense of "to set, to put".
- ator: Latin origin, a suffix forming agent nouns, meaning "a person or thing that does something".
Examples
The circuit uses a voltage comparator to trigger an alarm when the input exceeds a set threshold.
In quality control, the manufactured part is placed in an optical comparator to check its dimensions against the master blueprint.
The programmer used a comparator function to sort the list of data entries.