Antimatter warhead

An antimatter warhead was a type of antimatter weapon warhead that contained an antimatter explosive.

Photonic torpedoes were armed with antimatter warheads. The fact that the Earth Starfleet vessel was using weapons with antimatter warheads in 2153 came as a surprise to the Klingons. 

In 2268, the crew of the USS Enterprise (NCC-1701) utilized a telemetry probe armed with an antimatter warhead to destroy the space amoeba. The warhead was a simple magnetic bottle containing the charge, programmed with a timing detonator fuse. 

In 2373, the Maquis were known to have access to such weapons as antimatter warheads, tricobalt explosives and biogenic weapons.