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diatom

XDict

n. 矽藻类

PyDict

矽藻类

WordNet (r) 3.0 (2006) (WordNet)

diatom
n 1: microscopic unicellular marine or freshwater colonial alga
having cell walls impregnated with silica

The Collaborative International Dictionary of English v.0.48 (gcide)

Diatom \Di"a*tom\ (d[imac]`[.a]*t[o^]m), n. [Gr. dia`tomos cut
in two. See {Diatomous}.]
1. (Bot.) One of the {Diatomace[ae]}, a family of minute
unicellular Alg[ae] having a siliceous covering of great
delicacy, each individual multiplying by spontaneous
division. By some authors diatoms are called
{Bacillari[ae]}, but this word is not in general use.
[1913 Webster]

2. A particle or atom endowed with the vital principle.
[1913 Webster]

The individual is nothing. He is no more than the
diatom, the bit of protoplasm. --Mrs. E. Lynn
Linton.
[1913 Webster]

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英文字典中文字典相关资料:

Diatom - Wikipedia
A diatom (Neo-Latin diatoma) [a] is any member of a large group comprising several genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world Living diatoms make up a significant portion of Earth's biomass
Diatom | Description, Characteristics, Reproduction | Britannica
diatom, (class Bacillariophyceae), any member of the algal class Bacillariophyceae (division Chromophyta), with about 16,000 species found in sediments or attached to solid substances in all the waters of Earth
What are Diatoms? - Diatoms of North America
Diatoms are algae that live in houses made of glass They are the only organism on the planet with cell walls composed of transparent, opaline silica Diatom cell walls are ornamented by intricate and striking patterns of silica Why should I care?
DiatomBase
The diatoms are an amazing group of organisms, part of the Stremenopile lineage of life These photosynthetic unicells (ranging from 1 µm to over 1 mm in size) have chlorophylls a and c, and a complement of accessory pigments that include xanthophylls and carotenoids, making the living cells golden-brown in color
Diatom - Definition and Examples - Biology Online Dictionary
A diatom is a unicellular eukaryotic alga characterized by having a siliceous covering and a symmetrical body Diatoms are mostly aquatic, being found in fresh, brackish, and saltwater
4. 4: Diatoms - Biology LibreTexts
Diatoms are an incredibly diverse group of unicellular organisms containing anywhere from 20,000 to 2 million species These organisms are unicellular and surrounded by a frustule, a silica shell made from two distinct valves that enclose the plasma membrane
Diatoms | Animals | Monterey Bay Aquarium
Diatoms, one of the largest groups of organisms on Earth, are unicellular algae Scientists estimate there could be as many as 2 million species of diatoms — new species are discovered every year Diatoms can be solitary or live in colonies that might be shaped like long chains, stars or zigzags
Diatoms, unicellular photosynthetic algae – Inanimate Life
Diatoms are unicellular, and like most (but not all!) unicellular organisms, they are small, generally 20-100 um in size, and only visible to the naked eye as dust They have a cell wall with a unique (in biological terms) composition, being composed of silica dioxide
Diatom - Definition, Reproduction and Location | Biology Dictionary
Diatoms (pictured below) are a common type of unicellular phytoplankton that likely originated around the Jurassic period Diatoms can form colonies characterized by particular shapes (e g , stars, fans, and ribbons) and are encapsulated by a unique cell wall composed of silica, termed a frustule

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