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.
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.
Led by PhD student Avia Mizrachi, the group worked with a diatom, P.
The diatom was inoculated with 150,000 cells [mL.sup.-1] in all treatments and maintained under the following conditions: temperature was maintained at 22 [+ or -] 1[degrees]C with continuous light irradiance 220 [micro]mol [m.sup.-2] [s.sup.-1] (Phillips F96T8/TL865, 60 W), salinity 30, without aeration.
Diatom assemblages associated with turtle carapaces in the Neotropical region
The diatom Seminavis robusta is an ideal model organism for behavioral studies in the lab.
Sizes of the centric diatom Actinocyclus normanii as salinity function, a new tool for the assessment of paleoenvironments Introduction
This lighter isotopic signature was thought to be the result of changing diatom activity and ocean currents during and between ice ages.
Therefore, hatchery-reared Haliotis midae (2-3 mm) were weaned from a diatom diet onto either a commercial formulated feed (Abfeed-S34), a kelp-supplemented feed (Abfeed-S34K), or fresh kelp (Ecklonia maxima), and gut bacterial communities were compared between diet treatments using 16S rRNA microbiome sequencing analyses.
The objective of this research is to develop nanosorbents by immobilizing metal oxides on diatom surface and in pores of diatom frustules.
Changes in diatom assemblages and carbon, nitrogen and oxygen stable isotopes ([[delta].sup.13]C, [[delta].sup.15]N and [[delta].sup.18]O) revealed two periods, which are characterized by differences in the sedimentation rate, sediment type and trophic state of the northern part of the Curonian Lagoon.