Dictionary » N » Needle

Needle

needle

1. A small instrument of steel, sharply pointed at one end, with an eye to receive a thread, used in sewing.

In some needles(as for sewing machines) the eye is at the pointed end, but in ordinary needles it is at the blunt end.

2. See magnetic needle, under Magnetic.

3. A slender rod or wire used in knitting; a knitting needle; also, a hooked instrument which carries the thread or twine, and by means of which knots or loops are formed in the process of netting, knitting, or crocheting.

4. (Science: botany) One of the needle-shaped secondary leaves of pine trees. See pinus.

5. Any slender, pointed object, like a needle, as a pointed crystal, a sharp pinnacle of rock, an obelisk, etc. Dipping needle. See Dipping. Needle bar, the reciprocating bar to which the needle of a sewing machine is attached. Needle beam, to shoring, the horizontal cross timber which goes through the wall or a pier, and upon which the weight of the wall rests, when a building is shored up to allow of alterations in the lower part.

(Science: botany) Needle furze, the garfish.

Origin: OE. Nedle, AS. Ndl; akin to D. Neald, OS. Nadla, G. Nadel, OHG. Nadal, nadala, Icel. Nal, Sw. Nal, Dan. Naal, and also to G. Nahen to sew, OHG. Najan, L. Nere to 456 spin, Gr, and perh. To E. Snare: cf. Gael. & Ir. Snathad needle, Gael. Snath thread, G. Schnur string, cord.


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Re:

... its concentration gradualy decreases. At near bottom there is no oxygen at all. If we add suitable nutrients in the agar and innoculate with a needle (stab innoculation) after suitable incubation time we can know microbe's oxygen requirements. Aerophile grow on the top, microaerophile in middle ...

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by sosippus
Wed Sep 24, 2014 7:44 pm
 
Forum: Microbiology
Topic: Oxygen requirements of eukaryotes
Replies: 3
Views: 339

Oxygen requirements of eukaryotes

... its concentration gradualy decreases. At near bottom there is no oxygen at all. If we add suitable nutrients in the agar and innoculate with a needle (stab innoculation) after suitable incubation time we can know microbe's oxygen requirements. Aerophile grow on the top, microaerophile in middle ...

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by josem
Wed Sep 24, 2014 5:28 pm
 
Forum: Microbiology
Topic: Oxygen requirements of eukaryotes
Replies: 3
Views: 339

Help! I'm freaking out so badly please answer this!

sometimes I get these 'hot needle' sensations on my skin & it feels hot can I catch fire from this, I'm so scared..I usually get it on my head and legs. I read in the news that its possible for your cells to heat up so rapidly your ...

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by Coelacanth
Thu Jan 02, 2014 9:08 am
 
Forum: General Discussion
Topic: Help! I'm freaking out so badly please answer this!
Replies: 14
Views: 5056

Re: Re:

... of blood cells in the sample (billions of them) totally overwhelms the few bacteria that may end up in the sample from the skin, and because the needle is very sharp. For blood culture purposes the skin is also carefully disinfected, but even that does not remove the bacteria from the deep layers ...

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by snowathlete
Fri Dec 13, 2013 2:08 pm
 
Forum: Microbiology
Topic: What do you think these are, in my blood?
Replies: 16
Views: 9893

Re: Re:

... of blood cells in the sample (billions of them) totally overwhelms the few bacteria that may end up in the sample from the skin, and because the needle is very sharp. For blood culture purposes the skin is also carefully disinfected, but even that does not remove the bacteria from the deep layers ...

See entire post
by biohazard
Fri Dec 13, 2013 8:13 am
 
Forum: Microbiology
Topic: What do you think these are, in my blood?
Replies: 16
Views: 9893
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