A terrorist was someone who committed destructive acts for political or religious reasons.
MI5 suspected that I2 was a front for the terrorist organization Little Brothers. (PROSE: System Shock)
Angvian terrorists tried to disrupt a peace conference on Achilles 4 between the Angvians and Gholos. However, the real peace conference was happening on Dark Space 8. (AUDIO: Bang-Bang-A-Boom!)
V'rell was a Monan delegate to a major temporal summit on Gallifrey. Secretly he was a terrorist allied to the Free Time movement. (AUDIO: Square One)
A Tarenist cell known as the Church of Taren Capel claimed responsibility for the terrorist attacks that occurred during a 3 month period in Kaldor City. (AUDIO: Hidden Persuaders)