ˈseˌstän noun
( -s )
Etymology: German, from Greek sēston, neuter of sēstos, verbal of sēthein to strain, filter
: minute material moving in water and including both living organisms (as plankton and nekton) and nonliving matter (as plant debris or suspended soil particles) — see bioseston ; compare tripton
• ses·ton·ic (ˈ)se|stänik adjective