presternal
/ˌpriːˈstəːnl/(also praesternal)
adjective
1 Anatomy and Zoology. Of or relating to the presternum (now rare ); situated anterior or superior to the sternum.
2Situated anterior to the sternum of an insect's segment; specifically of or relating to a presternum.
Origin
Late 19th century; earliest use found in American Naturalist. From pre- + sternal.