Protrusion/prəʊˈtruːʒn/ Definition 1 of 2Pro Tip 1/3Physical Objects Use 'protrusion' when describing objects physically sticking out. A noticeable protrusion on the door was caused by a faulty hinge. Pro Tip 2/3Neutral Term 'Protrusion' is neutral and doesn't imply good or bad, just observation. Careful of the protrusion on the sidewalk—it might trip someone. Pro Tip 3/3Visibility A protrusion might be large or small but can usually be seen or felt. The carpet had a slight protrusion where the floor was uneven.