isopycnal

isopycnic

[ahy-suh-pik-nik]
adjective
1.
Also, isopycnal [ahy-suh-pik-nl] . having the same density.
noun
2.
a line drawn on a map connecting all points having the same density, as of water or air.

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

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World English Dictionary
isopycnal or isopycnic (ˌaɪsəʊˈpɪknəl, -ˈpɪknɪk)
 
n
a line on a map connecting points of equal atmospheric density
 
[C19: from iso- + Greek puknos thick]
 
isopycnic or isopycnic
 
n
 
[C19: from iso- + Greek puknos thick]

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