I. | ̷ ̷ ̷ ̷|piknik adjective
also iso·pyc·nal -nəl
Etymology: is- + pycn- + -ic or -al
: of, relating to, or marked by equal density
II. noun
or isopycnal “
( -s )
: a line or surface on a map connecting points of equal density (as of water, air)
III. adjective
: being or produced by a technique (as centrifugation) in which the components of a mixture are separated on the basis of differences in density