paratracheal
/ˌparəˈtreɪkɪəl/ /ˌparətrəˈkiːəl/adjective
1 Botany. Designating parenchyma that surrounds or is associated with the vessels in wood.
2 Anatomy and Medicine. Located or occurring beside the trachea.
Origin
Early 20th century. From para- + tracheal.