• (n.) The act of obtruding; a thrusting upon others by force or unsolicited; as, the obtrusion of crude opinions on the world. • (n.) That which is obtruded.
Ob·tru'sion noun [ Latin obtrusio . See Obtrude .] 1. The act of obtruding; a thrusting upon others by force or unsolicited; as, the obtrusion of crude opinions on the world. 2. That which is obtruded. Milton. 
obtrusion 1. A thrusting upon others by force or being unsolicited; such as, the obtrusion of crude opinions on the world. 2. An interference or intrusion.