(1) - Obtrusion (n.) That which is obtruded. (2) - Obtrusion (n.) The act of obtruding; a thrusting upon others by force or unsolicited; as, the obtrusion of crude opinions on the world.
(1) - Obtrusive (a.) Disposed to obtrude; inclined to intrude or thrust one's self or one's opinions upon others, or to enter uninvited; forward; pushing; intrusive.