Theta-matrix compositor

A theta-matrix compositor was a component of a Starfleet vessels warp drive. Dilithium was recrystalized in the compositor. 

The crew of the USS Voyager experienced a problem with the theta-matrix compositor in 2372, when the devices slowed recrystalizing. 

In 2386, the USS Robinson (NCC-71842)'s theta-matrix compositor was damaged in an attack by the Glant. Commander Relkdahz reported to Benjamin Sisko that new parts would be required to mame repairs. (