ballast
bal·last
noun
3.
4.
a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
5.
an electrical device for starting and regulating fluorescent and discharge lamps
verb
Origin
From Middle English bar (“bare”) + last (“load”).
Phrases
- ballast car
- ballast resistor
- ballast tank
- ballast up
- ballast wagon
- in ballast
- in ballast condition
- success ballast
- water ballast
Related words
Word family
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.