Disseisin

Disseisin [fr. dissaisin, Fr.], a wrongful putting out of him that is seised of the freehold, not, as in abatement or intrusion, a wrongful entry, where the possession was vacant; but an attack on him who is in actual possession, and turning him out; it is an ouster from a freehold in deed, as abatement and intrusion are ousters in law, 3 Steph. Com. A title by disseisin is a good title against all but the rightful owner. Consult Williams on Seisin