Constantans

Part of speech: noun

Definitions

1. A type of copper-nickel alloy known for its stable electrical resistance across a range of temperatures used primarily in precision resistors and thermocouples
2. A specialized metal composition consisting mainly of copper and nickel that maintains consistent electrical properties despite temperature changes and is often utilized in instrumentation
3. An alloy characterized by its near-invariant resistance when heated or cooled, favored in temperature sensors and electrical components for accurate measurements

Etymology: "Constantans" is the plural of "constantan," the name of a copper-nickel alloy prized for its nearly constant electrical resistance across a wide range of temperatures. The plural form is the one that appears in the source, so it is the form of the noun for the alloy itself, and it simply reflects that "constantan" is a count noun that can refer to several varieties or batches of the metal. The word "constantan" is itself the commercial name of the alloy, a coinage built on the English adjective "constant," meaning unchanging or steady. The name points directly to the alloy's defining property: its resistance barely shifts as the metal heats or cools, which made it useful for precision resistors, strain gauges and thermocouples.

Synonyms: constantan