generator

noun

gen·​er·​a·​tor ˈje-nə-ˌrā-tər 

1

: one that generates: such as

a

: an apparatus in which vapor or gas is formed

b

: a machine by which mechanical energy is changed into electrical energy

2

: a mathematical entity that when subjected to one or more operations yields another mathematical entity or its elements

specifically : generatrix

Did you know?

Generators work by rotating a coil of wire in a magnetic field, causing a current to flow in the wire. A generator may be a huge spinning turbine powered by water, wind, steam, gas, or nuclear reactions, which sends electricity out through power lines to thousands of customers. But normally when we use the word, we're thinking of a small machine powered by gasoline or diesel, such as you might keep in your basement for those times when a storm knocks out your power, to create electricity right in front of your eyes. A special kind of generator called an alternator powers a car's electrical system (including its lights, power steering, etc.) while the car is running.

Synonyms of generator

• creator
• founder
• father
• inventor
• author
• maker

Examples of generator in a Sentence

This new product will be a major revenue generator.

a backup generator for the store

Recent Examples on the Web

Additionally, the resistance of the generator driven by the buoy can also be adjusted. — Georgina Jedikovska, Interesting Engineering, 21 Sep. 2026

Two years ago, the biggest record labels took artificial intelligence music generators to court for copyright infringement. — Cerys Davies, Los Angeles Times, 21 Sep. 2026

The property includes a whole-house Generac generator, with five years remaining on the warranty. — James Alexander, Hartford Courant, 20 Sep. 2026

Berkshire Hathaway in 2016 bought Precision Castparts, a manufacturer for products used in turbines, which are the main component in electrical generators. — John Towfighi, CNN Money, 19 Sep. 2026

Word History

First Known Use

1637, in the meaning defined at sense 1

Phrases Containing generator

• electrostatic generator
• Van de Graaff generator

Rhymes for generator

• activator
• actuator
• agitator
• alligator
• allocator
• alternator
• animator
• annotator
• applicator
• arbitrator
• aspirator
• aviator

Kids Definition

generator

noun

gen·​er·​a·​tor ˈjen-ə-ˌrāt-ər 

: one that generates: as

a

: a piece of laboratory equipment in which vapor or gas is formed

b

: a machine by which mechanical energy is changed into electrical energy