isopycnic

• POS: Adjective, Noun
• HYPHEN: i=so=pyc=nic

CIDE DICTIONARY

isopycnic, a. [Iso- + Gr. pykno`s dense.].

 Having equal density, as different regions of a medium; passing through points at which the density is equal; as, an isopycnic line or surface.  [1913 Webster]

isopycnic, n. 

 A line or surface passing through those points in a medium, at which the density is the same.  [1913 Webster]