don·gle 
(dôngəl, dŏng-)
(dôngəl, dŏng-)n.
A hardware device that renders inoperable certain software on a computer if the device is not attached to the computer.
[Probably arbitrary coinage.]
- thermograph
- thermographic
- thermographically
- thermography
- thermohaline
- thermojunction
- thermokarst
- thermolabile
- thermolability
- thermoluminescence
- thermoluminescent
- thermolysis
- thermolytic
- thermometer
- thermometric
- thermometry
- thermomotor
- thermonuclear
- thermoperiodicity
- thermoperiodism
- thermophile
- thermophilic
- thermopile
- thermoplastic
- thermoplasticity