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1. The smallest unit of digital information expressed in the binary system of notation (either 0 or 1).
2. The electrical signal used in electronic computers.
Synonym(s): binary digit


abbreviation for binary digit, the smallest unit of information in a computer. Bits are the building blocks for all information processing in digital electronics and computers. Eight bits equals one byte. See also byte.


A gene on chromosome 20p13 that encodes a ubiquitous immunoglobulin-like cell surface receptor for CD47 that acts as a docking protein and induces translocation of PTPN6, PTPN11 and other binding partners from the cytosol to the plasma membrane. SIRPA supports adhesion of cerebellar neurons, neurite outgrowth and glial cell attachment, and may play a key role in intracellular signalling during synaptogenesis and in synaptic function. It downregulates receptor tyrosine kinase-coupled cellular responses induced by cell adhesion, growth factors and insulin; it also downregulates phagocytosis, mast cell activation and dendritic cell activation. CD47 binding prevents maturation of immature dendritic cells and inhibits cytokine production by mature dendritic cells. It is highly expressed in the brain.


Abbreviation for behavioral inattention test.


1. the detachable piercing piece of a drill.
2. the metal part of the bridle that goes into the horse's mouth and over the tongue; used to restrain and direct the horse by exerting pressure on the attached reins. There are many patented designs, each with its devotees. The simplest is a plain bar but the common ones are jointed in the middle. The variations include side bars and curb chains which allow greater pressure to be put on the animal's jaw

circular bit
encircles the lower jaw and is connected by a standing martingale to the girth. It prevents the horse throwing up its head and rearing. Used also in a head harness for leading an active stallion.
snaffle bit
any bit jointed in the middle.

Patient discussion about bit

Q. Don’t you feel a bit insincere? I work as a nurse in the ER, and last night a well-known alternative “healer” came to the ER with complaints of bellyache (which turned out to be kidney stones). Now I wouldn’t mind that, except that this healer always speaks against using painkillers and claims that doctors don’t treat the person as a whole like he does. He has no shame to convince patients to avoid hospitals, but when it comes to his own body, he doesn’t seem to believe in his own medications. It’s so frustrating!

A. well, i'm not sure about what line of alternative healing this guy practice but from what i know - the main idea is that alternative healing is usually for preventing illnesses, and it's very good at it. it's main effort is changing way of life and restoring balance. but it will never compare to western medicine on emergency treatments. it's wise to avoid taking pain killers - but it's wiser to take them if you really need it. today people in the U.S take medicines like they were candy and every medicine has side effects.
my brother is an MD and studied Chinese medicine - he practice both and there is a great advantage in using both to complete the therapy.

Q. if a bee bit me and i am allergic , what would happen to me , and what is the best treatment?

A. It depends on your previous exposure and response to the bee sting, but it may result in a severe, life threatening response called anaphylaxis. It includes intense itching and rash, runny nose and mouth, abdominal cramps, vomiting, but the life threatening responses are the closure of the throat and airways and collapse of the heart. It's treated with adrenalin and other medications.

It can be prevented first by avoiding the offending agent, and also by carrying an ready to use adrenalin injector in order to treat it quickly. Also, the allergy can be ameliorated by a series of treatments called immunotherapy, in which the allergic individual is exposed to the allergen in minute amount to make him or her not sensitive any more to this allergen.

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Q. I want to understand why these differences? I'm new to this, and a bit lost... I have indication of mastectomy plus post-mastectomy radiation. I've heard of women in my situation that were prescribed chemo and that's it. No radiation and no breast removal. My doctor said this is not an option for me, but didn't explain anything, although I insisted. I want to understand why these differences? I'm new to this, and a bit lost...

A. You know I got an oncologist who explained me on these. Let me tell you. I was on my last stage of breast cancer. I did chemo followed by right modified radical mastectomy with lymph node dissection followed by radiation. I will continue to take Herceptin and Zometa for the rest of my life. You will have breast removal and then radiation which means your cancer might be at an advanced stage. Removal is done to remove the tumor and radiation to kill cells which may enter other body parts. In your case it’s entered into other body parts so they are using radiation as the best treatment for you.

More discussions about bit
References in periodicals archive ?
Because of poor hole conditions and a diminishing supply of drill bits, however, they were able to drill to only 33 meters.
The new facility, centrally located to facilitate rapid bit delivery across Russia, increases global Varel PDC drill bit production by approximately 20 percent.
A standard, sharp drill bit This is usually black with a sharp end and designed for drilling soft materials around the house like wood, skirting boards, doors, frames, window frames, wooden flooring or plastic.
The company will have on display 50 drill bits including the world's largest roller cone drill bit, the 6000 pound 44" L111.
Using a masonry drill bit (or wood drill bit if you are drilling into a fence), drill two x 6mm holes.
The 50/50 JV will include the roller cone drill bit business of Sandvik's Rotary Division, a business unit of Sandvik Mining and Construction, and the drill bit business of Smith Bits Mining and Industrial Tools, a unit of Smith International's Smith Bits business unit.
Then, when the drill is within a few inches of the chamber, Moores plans to change from a carbide-tipped drill bit to a diamond-tipped one.
They are well versed in the drill bit business, so we did not have to battle a learning curve.
Tools: 18v drill driver 6mm masonry drill bit Spirit level
DHP Managing Director Ian Kirk adds, "We have worked diligently with the drill bit design experts at Varel to produce a casing bit technology that fulfills the needs of our customers worldwide.
United Diamond, Canada's largest steel body PDC drill bit manufacturer, designs and markets innovative bit technology for vertical, directional and horizontal drilling.