Dictionary » R » Ring

Ring

ring

A circle, or a circular line, or anything in the form of a circular line or hoop.

2. Specifically, a circular ornament of gold or other precious material worn on the finger, or attached to the ear, the nose, or some other part of the person; as, a wedding ring. Upon his thumb he had of gold a ring. (Chaucer) The dearest ring in Venice will I give you. (Shak)

3. A circular area in which races are or run or other sports are performed; an arena. Place me. O, place me in the dusty ring, Where youthful charioteers contened for glory. (E. Smith)

4. An inclosed space in which pugilists fight; hence, figuratively, prize fighting. The road was an institution, the ring was an institution.

5. A circular group of persons. And hears the muses in a Aye round about Jove's alter sing. (milton)

6. (Science: geometry) The plane figure included between the circumferences of two concentric circles. The solid generated by the revolution of a circle, or other figure, about an exterior straight line (as an axis) lying in the same plane as the circle or other figure.

7. (Science: astronomy) An instrument, formerly used for taking the sun's altitude, consisting of a brass ring suspended by a swivel, with a hole at one side through which a solar ray entering indicated the altitude on the graduated inner surface opposite.

8. (Science: botany) An elastic band partly or wholly encircling the spore cases of ferns.

9. A clique; an exclusive combination of persons for a selfish purpose, as to control the market, distribute offices, obtain contracts, etc. The ruling ring at Constantinople. (E. A. Freeman) Ring armor, armor composed of rings of metal. See Ring mail, below, and chain mail, under Chain.

(Science: chemistry) Ring blackbird, a graphic formula in the shape of a closed ring, as in the case of benzene, pyridine, etc. Ring mail, a kind of mail made of small steel rings sewed upon a garment of leather or of cloth. Ring micrometer.

(Science: astronomy) The ring ousel. The prize ring, the ring in which prize fighters contend; prize fighters, collectively. The ring. The body of sporting men who bet on horse races. The prize ring.

Origin: AS. Hring, hrinc; akin to Fries. Hring, D. & G. Ring, OHG. Ring, hring, Icel. Hringr, DAn. & SW. Ring; cf. Russ. Krug'. Cf. Harangue, Rank a row,Rink.

1. To surround with a ring, or as with a ring; to encircle. Ring these fingers.

2. (Science: botany) To make a ring around by cutting away the bark; to girdle; as, to ring branches or roots.

3. To fit with a ring or with rings, as the fingers, or a swine's snout.

Origin: Ringed; Ringing.

(Science: veterinary) To rise in the air spirally.


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Is thiamin (thiamine) amine or not?

... in the Merriam-Webster dictionary include dopamine and histamine, in both of which, amino group is attached to a carbohydrate chain, not to the ring. Yes, in thiamin, NH2 is attached directly to the ring.

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by boron
Fri Jan 23, 2015 11:08 am
 
Forum: Human Biology
Topic: Is thiamin (thiamine) amine or not?
Replies: 2
Views: 1519

Is thiamin (thiamine) amine or not?

From what it looks like to me, thiamine might not be an amine because the amino group is connected to an aromatic ring. I know phenylamines are amine groups connected to benzene rings. In thiamine, the amine group is connected to a pyrimidine ring. So I'm not sure but this may be ...

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by BasicBiology
Thu Nov 06, 2014 7:44 pm
 
Forum: Human Biology
Topic: Is thiamin (thiamine) amine or not?
Replies: 2
Views: 1519

Re: Any ideas for vaccine development or anti-viral drugs???

... (PMO) are a class of uncharged single-stranded DNA analogs modified such that each subunit includes a phosphorodiamidate linkage and morpholine ring. PMO antisense agents have been reported to effectively interfere with the replication of several positive-strand RNA viruses in cell culture. ...

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by jonmoulton
Mon Sep 15, 2014 3:04 pm
 
Forum: Cell Biology
Topic: Any ideas for vaccine development or anti-viral drugs???
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Views: 12545

Microevolution verus Macroevolution

... though, is speciation, and in fact there is a beautiful example of extinction and speciation in a single event, namely an extinction event in a ring species. If a selection of sub-species in the middle of the ring go extinct, by a bolide impact, for example, and the remaining subspecies are ...

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by hackenslash
Thu Mar 06, 2014 8:57 am
 
Forum: Evolution
Topic: Microevolution verus Macroevolution
Replies: 16
Views: 25913

Conflicting results of Gram-Negative unknown

... positive or pigment negative...not quite sure what that means. Has never been discussed in lab 6. Indole test *Negative RESULTS: No cherry red ring on top of liquid layer 7. Citrate test *VERY CONFLICTED ABOUT RESULTS, RESULTS: Positive indicator would be color change of the media from green-ish ...

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by Jrh21854
Sun Dec 01, 2013 8:25 pm
 
Forum: Microbiology
Topic: Conflicting results of Gram-Negative unknown
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