Now rare or Obs. [ad. med.L. trūsiōn-em, n. of action f. trūdĕre to push, thrust. In sense 1 app. short for intrusion.]
1. Law. Illegal entry: = INTRUSION 2.
a. 1604. Hanmer, Chron. Irel. (1809), 349. It was agreed, that his wife should not be endowed, because that her husband had not entred by the King, but rather by trusion.
2. The action of pushing or thrusting.
1656. trans. Hobbes Elem. Philos. (1839), 214. Pulsion; when the motions of the movent and moved body begin both together may be called trusion or thrusting and vection.
1678. Cudworth, Intell. Syst., I. v. § 5. 888. As Engines and Machines move, by Trusion or Pulsion.
1729. Desaguliers, in Phil. Trans., XXXVI. 132. If the Point of Trusion be taken at C.