adjective ˈsɛpt(ə)lˈseptl
1Anatomy Biology 
Relating to a septum or septa.
 Example sentencesExamples
-  He had corrective surgery for the atrioventricular septal defect at 3 years of age.
 -  The pleurocoels do not invade the parapophyses and they lack septal partitions.
 -  Known as septal defects, the holes can typically be patched up with surgery.
 -  Another unexplored aspect of morphology involves septal microstructure.
 -  The endocardial cushions form the lower atrial septum, the upper ventricular septum, the septal leaflet of the tricuspid valve and the anterior leaflet of the mitral valve.
 
2Archaeology 
(of a stone or slab) separating compartments in a burial chamber.
adjective ˈsɛpt(ə)lˈseptl
Relating to a sept or clan.