- a combining form extracted from electron, used with nouns or combining forms, principally in the names of electron tubes (ignitron; klystron; magnetron) and of devices for accelerating subatomic particles (cosmotron; cyclotron); also, more generally, in the names of any kind of chamber or apparatus used in experiments (biotron).
- a public weighing machine
- the place where a tron is set up; marketplace
- indicating a vacuum tube
- indicating an instrument for accelerating atomic or subatomic particles
