seston means all particulate matter suspended in bodies of water such as lakes and seas, including plankton, organic detritus, and inorganic material.
Among words judged in Lexicurio's Arena, seston ranks #3,411 of 42,747 for Qualifying.
Etymology
From German Seston, by surface analysis, Ancient Greek σηστός (sēstós, “sifter”, verbal adjective of σήθω (sḗthō, “I strain, filter”)) + -on. Compare plankton.
noun
- All particulate matter suspended in bodies of water such as lakes and seas, including plankton, organic detritus, and inorganic material.
Definitions & examples from Wiktionary (CC BY-SA 3.0).