# seston

> English word · Noun

## Definitions
1. All particulate matter suspended in bodies of water such as lakes and seas, including plankton, organic detritus, and inorganic material.

## Etymology
From German Seston, by surface analysis, Ancient Greek σηστός (sēstós, “sifter”, verbal adjective of σήθω (sḗthō, “I strain, filter”)) + -on. Compare plankton.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/seston