co·gen·er·a·tion 
(kō-jĕn′ə-rāshən)
(kō-jĕn′ə-rāshən)n.
The simultaneous generation of electricity and useful heat from a single power source.
- extraterritorially
- extratropical
- extrauterine
- extravagance
- extravagancy
- extravagant
- extravagantly
- extravaganza
- extravagate
- extravasate
- extravasation
- extravascular
- extravehicular activity
- extraversion
- extraversion
- extravert
- extravert
- extraverted
- extraverted
- extra-virgin olive oil
- extremal
- extreme
- extremely
- extremely high frequency
- extremely low frequency