obtrusion noun. [ǝb'tru:ʒ(ǝ)n] L16.
[Alt. of INTRUSION by substitution of OB-.]
1. The action or an act of forcing oneself or one's presence on a person; the action or an act of imposing one person or thing on another. Also, a thing so imposed, an unwelcome intrusion. L16.
Cornhill Magazine The obtrusion of these topics upon persons not conversant with..technicalities.

2. The forcible pushing or thrusting of something into or against something else. M19.

[TahlilGaran] English Dictionary ▲