Dictionary » D » Disk



1. A discus; a quoit. Some whirl the disk, and some the javelin dart. (Pope)

2. A flat, circular plate; as, a disk of metal or paper.

3. (Science: astronomy) The circular figure of a celestial body, as seen projected of the heavens.

4. (Science: biology) a circular structure either in plants or animals; as, a blood disk; germinal disk, etc.

5. (Science: botany) The whole surface of a leaf. The central part of a radiate compound flower, as in sunflower.

a part of the receptacle enlarged or expanded under, or around, or even on top of, the pistil.

6. (Science: zoology) The anterior surface or oral area of coelenterate animals, as of sea anemones. The lower side of the body of some invertebrates, especially when used for locomotion, when it is often called a creeping disk.

in owls, the space around the eyes. Disk engine, a form of rotary steam engine.

(Science: zoology) disk shell, any species of discina.

Origin: L. Discus, gr. See dish

alternative forms: disc.

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Bacterial Taxonomy

... lamellae. However, their use of chlorophyll instead of bacteriochlorophyll makes them unique among the bacteria . They're Gram-negative cocci or disks. Like Actinobacteria, disk-shaped cyanobacteria may form filamentous structures with reproductive spores, but the presence of heterocysts or the ...

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by wildfunguy
Sat Oct 19, 2013 6:12 pm
Forum: Microbiology
Topic: Bacterial Taxonomy
Replies: 3
Views: 7198

Re: water problem work sheet

... to determine the source of contamination of the pond. (See the Enteric Laboratory Presentation in Module 5 and your A and P and Microbiology Study disk by Rowe for information on this topic.) Results: Presumptive Test Confirmed Test Completed Test Sample Location Gas EMB Agar – Lactose Fermentation ...

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by nursewhitman
Fri Nov 30, 2012 12:44 am
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Topic: water problem work sheet
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Re: Codons are triplets, but what's a Singlet, Doublet, etc?

... for you! To make it as easy as possible for us to see all the variables and how they are formed I wrote a minimal code subroutine to save on disk (and in RAM) a list of 1 to 8 letter codons in Base4 or Base5. The lines of code to save to disk can later be removed, for use in the chromosome ...

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by GaryGaulin
Mon Oct 29, 2012 7:18 am
Forum: Bioinformatics
Topic: Codons are triplets, but what's a Singlet, Doublet, etc?
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What is this animal?

... said it was a croc needs to go back to school. I'm no skeleton expert, but these pictures have me very interested. Notice the spiny tail and three disk shapes at the end of the tail. There is definitely a lot of cartilage. What I find most interesting is the location of the eye sockets and the ...

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by OdinsRaven
Sun May 27, 2012 3:19 pm
Forum: Zoology Discussion
Topic: What is this animal?
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Re: Molecular gene (genome) concept scientifically untenable

... that is stored on the chromosomes. It is not encoded by any chemical structure including DNA. It is like the storage of computer software on hard disk. The chemical structure of the hard disk does not encode the information stored on it. The chemical structure only encodes chemical information ...

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by PAWahid
Sat May 12, 2012 2:29 am
Forum: Molecular Biology
Topic: Molecular gene (genome) concept scientifically untenable
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