barretter

POS

Noun

HYPHEN

bar=ret=ter

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WORDNET DICTIONARY

Noun barretter has 1 sense

barretter(n = noun.artifact) ballast, ballast resistor - a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations);

is a kind of resistance, resistor

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CIDE DICTIONARY

barretter, n. [OF. bareter to exchange. Cf. Barter.].

a resistor inserted into a circuit to compensate for changes (such as those arising from temperature fluctuations); a thermal cymoscope. [Webster 1913 Suppl.]

" The original form consisted of an extremely fine platinum wire loop attached to terminals and inclosed in a small glass or silver bulb. It operates by increased resistance when subjected to the influence of an electric current. In a later variety, called the liquid barretter, wire is replace by a column of liquid in a very fine capillary tube. A recent version has a resistor composed of an iron wire in a glass bulb containing hydrogen, with the temperature variation of resistance such that the current passing through it remains constant over a wide range of applied voltages." [Webster 1913 Suppl.]