diatom


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Related to diatom: diatomaceous earth

di·a·tom

 (dī′ə-tŏm′)
n.
Any of various microscopic one-celled or colonial heterokonts of the class Bacillariophyceae that are photosynthetic, have a silica cell wall made up of two interlocking parts, and form an important component of phytoplankton.

[New Latin diatoma, from Greek diatomos, cut in half, from diatemnein, to cut in half : dia-, dia- + temnein, to cut; see tem- in Indo-European roots.]

diatom

(ˈdaɪətəm; -ˌtɒm)
n
(Microbiology) any microscopic unicellular alga of the phylum Bacillariophyta, occurring in marine or fresh water singly or in colonies, each cell having a cell wall made of two halves and impregnated with silica. See also diatomite
[C19: from New Latin Diatoma (genus name), from Greek diatomos cut in two, from diatemnein to cut through, from dia- + temnein to cut]

di•a•tom

(ˈdaɪ ə təm, -ˌtɒm)

n.
any of numerous mostly marine algae of the class Bacillariophyceae (phylum Chrysophyta), each one-celled alga being enclosed in an intricately patterned double shell of silica, one shell fitting over the other like a box lid.
[1835–45; < New Latin Diatoma orig. a genus name, feminine n. based on Greek diátomos cut in two. See dia-, -tome]

di·a·tom

(dī′ə-tŏm′)
Any of various microscopic one-celled algae that live in water, have hard shells composed mostly of silica, and often live in colonies. Diatom shells are made of two symmetrical parts called valves.

diatomaceous (dī′ə-tə-mā′shəs) adjective
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.diatom - microscopic unicellular marine or freshwater colonial alga having cell walls impregnated with silicadiatom - microscopic unicellular marine or freshwater colonial alga having cell walls impregnated with silica
phytoplankton - photosynthetic or plant constituent of plankton; mainly unicellular algae
alga, algae - primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves
Bacillariophyceae, class Bacillariophyceae, class Diatomophyceae, Diatomophyceae - marine and freshwater eukaryotic algae: diatoms
Translations
References in classic literature ?
The little spindle-shaped things in the centre are diatoms and may be disregarded since they are probably vegetable rather than animal.
Contract notice: diatom inventory in streams and canals on the french side of the rhine-meuse basin
Cyclotella cryptica, a new brackish-water diatom species.
Changes in diatom assemblages and carbon, nitrogen and oxygen stable isotopes ([[delta].
Grain size analysis, loss on ignition, and fossil diatom assemblages were examined to reconstruct paleoenvironmental changes in the sequence.
Regarding structural considerations, physical factors such as climatic conditions can affect the distribution patterns of the diatom community (Jadhav et al.
Fossilized diatoms are what make up diatomaceous earth, an abundant, soft, sedimentary rock rich in biogenic silica, derived from diatom cell walls.
The abundance of the diatom group in this study, is similar to other works [20, 22, 23, 24, 25].
Therefore, this study evaluated the spatial and seasonal variations in the composition and structure of the periphytic diatom assemblage, according to the urban-rural gradient, relating them to physical and chemical variables, and selected diatom species as bioindicators of urban and rural stretches, in the Guaiapo Stream, Pirapo River basin.
A specific issue of this relationship concerns the "goodness" of food for marine grazers represented by diatom blooms, which are highly prevalent biological features in the most productive ocean ecosystems (Irigoien et al.
There are substantial variations in the delivery of dissolved silica from continents to the ocean due to different lithology of drainage areas, continental weathering intensity, climatic variations, and diatom production (Conley, 1997).
There are Diatom sections consisting mainly of UM sediments and containing an amount of Middle Miocene sediments.