adjective.
Not sternal; said of ribs that do not join the sternum.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
not connected to the sternum or breastbone
Word Usage
"In the healthy adult male body, Plate 22, the two lungs, D D*, whilst in their ordinary expanded state, may be said to range over all that region of the trunk of the body which is marked by the sternal and asternal ribs."