Meanings
- uncountableCommunity of small species that live in mesopsammic spaces where water is filtered between grains of sand and fine gravel.
The mesopsammon of intertidal environments and the many physical, chemical and mineralogical factors which affect their presence are very complex.
2003, Italian Habitats: Sand dunes and beaches, →ISBN, page 712 more examples
The body, however, is always extremely slender with a diameter of not more than 500 μ, thus enabling the animals to move through the interstitial system without actively replacing the sand grains; all the listed species, therefore, are considered to be mesopsammon forms sensu Broaden (1962)
1971, Smithsonian contributions to zoology - Issues 72-77, page 18As is the case with mesopsammic representatives of other major taxa, interstitial nemertines constitute a unique biological grouping recognizable by specializations that are characteristic of mesopsammon (see Swedmark, 1964, for review of the nature of interstitial organisms).
2012, Per Sundberg, R. Gibson, G. Berg, Recent Advances in Nemertean Biology, →ISBN
Origin
From mesopsammic + -on. Compare psammon.
Full word history & related roots →Cite this entry
mesopsammon. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/mesopsammon
“mesopsammon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mesopsammon. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “mesopsammon,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/mesopsammon.
Source: mesopsammon on Wiktionary, CC BY-SA 4.0.