isopycnic

[ ahy-suh-pik-nik ]
/ ˌaɪ səˈpɪk nɪk /

adjective

Also i·so·pyc·nal [ahy-suh-pik-nl] /ˌaɪ səˈpɪk nl/. having the same density.

noun

a line drawn on a map connecting all points having the same density, as of water or air.

Origin of isopycnic

1885–90; iso- + pycnic, variant of pyknic

British Dictionary definitions for isopycnal

isopycnal

isopycnic (-ˈpɪknɪk)

/ (ˌaɪsəʊˈpɪknəl) /

noun

a line on a map connecting points of equal atmospheric density

Word Origin for isopycnal

C19: from iso- + Greek puknos thick