Online used-car retailer Carvana expanding to Miami. Carvana.com offers consumers the ability to shop, finance, purchase and trade in a car using its online platform â without ever stepping into a dealership. Online auto retailer Carvana is expanding to Miami.
retraction, n 1. a drawing or shrinking back; the laying back of tissues to expose a given part. n 2. distal movement of teeth; a distal or retrusive position of the teeth, dental arch, or jaw. retraction, gingival, n laying back of the free gingival tissue to expose the gingival margin area of a preparation by mechanical, chemical, or electrical means.
Chest Retractions. Chest retractions are a sucking in of the skin in between or around the bones of the chest when inhaling. Retractions may occur in several areas of the chest and are a sign of increased use of the chest muscles for breathing. This usually is a sign of difficulty breathing. As breathing becomes more difficult, areas of the chest where retractions can be seen increase. 1  Mild difficulty breathing may cause retraction in the belly, just below the rib cage (subcostal) and at the bottom of the breastbone (substernal).