D defs.my
Entry 1 sense Webster, 1913

Nodal

· Nod·al · IPA /ˈnəʊdəl/
01 a. Of the nature of, or relating to, a node; as, a nodal point.
  1. 1.
    Of the nature of, or relating to, a node; as, a nodal point.
Phrases & compounds
Nodal line — in a vibrating plate or cord, that line or point which remains at rest while the other parts of the body are in a state of vibration.