Isomagnetic collector
An isomagnetic collector was a technology used to reduce the particle wake produced by a starship's impulse engines.

An alternate version of  acquired this technology from the Ikaarans after having been thrown back in time 117 years from 2154. This Enterprises T'Pol gave her counterpart the specifications for the collector to help Enterprise avoid the accident which transported them back in time in the first place. ()

See also
Isomagnetic conduit
Isomagnetic disintegrator
Technology