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isopycnic

[ahy-suh-pik-nik]
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adjective
  1. Also i·so·pyc·nal [ahy-suh-pik-nl] /ˌaɪ səˈpɪk nl/. having the same density.
noun
  1. 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018