base


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Related to base: Base camp, second base

base

 [bās]
1. the lowest part or foundation of anything. See also basis.
2. the main ingredient of a compound.
3. the nonacid part of a salt; a substance that combines with acids to form salts. In the chemical processes of the body, bases are essential to the maintenance of a normal acid-base balance. Excessive concentration of bases in the body fluids leads to alkalosis.
4. a unit of a removable dental prosthesis.
5. in genetics, a nucleotide, particularly one in a nucleic acid sequence.
intermediary base the layer of cement between a dental restoration and the tooth structure, acting as an insulator and protective barrier.
nitrogenous base an aromatic, nitrogen-containing molecule that serves as a proton acceptor, e.g., purine or pyrimidine.
ointment base a vehicle for the medicinal substances carried in an ointment.
purine b's a group of compounds of which purine is the base, including uric acid, adenine, xanthine, and theobromine.
Bases. A, Purine and some substituted purine bases occurring in nucleic acids. B, Pyrimidine and some substituted pyrimidine bases occurring in nucleic acids. From Dorland's, 2000.
pyrimidine b's a group of chemical compounds of which pyrimidine is the base, including uracil, thymine, and cytosine, which are common constituents of nucleic acids.

base

(bās), [TA]
1. The lower part or bottom; the part of a pyramidal or conic structure opposite the apex (for example, heart); the foundation.
See also: Brønsted base, Lewis base. Synonym(s): basis [TA], basement (1)
2. pharmacy the chief ingredient of a mixture.
See also: Brønsted base, Lewis base.
3. chemistry an electropositive element (cation) that unites with an anion to form a salt; a compound ionizing to yield hydroxyl ion.
See also: Brønsted base, Lewis base. Synonym(s): alkali (2)
4. Nitrogen-containing organic compounds (for example, purines, pyrimidines, amines, alkaloids, and ptomaines) that act as Brønsted bases.
5. Cations, or substances forming cations.
6. A substance the pH of which is over 7.0, in contrast to an acid.
[L. and G. basis]

base

(bās)
n.
1. Biology
a. The part of a plant or animal organ that is nearest to its point of attachment.
b. The point of attachment of such an organ.
2. Chemistry
a. Any of a class of compounds whose aqueous solutions are characterized by a bitter taste, a slippery feel, the ability to turn litmus blue, and the ability to react with acids to form salts.
b. A substance that yields hydroxide ions when dissolved in water.
c. A substance that can act as a proton acceptor.
d. A substance that can donate a pair of electrons to form a covalent bond.
3. One of the nitrogen-containing purines (adenine and guanine) or pyrimidines (cytosine, thymine, and uracil) that occurs attached to the sugar component of DNA or RNA.

base

The core of thing.
 
Anatomy
The bottom of a conical or pyramidal structure—basis TA, basement.
 
Chemistry
(1) An electropositive substance which combines with an acid to form a salt.
(2) A substance that dissociates to give H+ ions in aqueous solutions; chemical substance that ionises in water to release hydroxyl ions (OH-) or other ions that combine with hydrogen ions.
(3) A substance which can combine with a protons/H+ ions.
(4) Cation.
 
Drug slang
A regional street term for freebase cocaine; crack.
 
Molecular biology
A single nucleotide.

Pharmacology
The core active ingredient of a therapeutic agent.
 
Vox populi
The lowest part, bottom or fundamental part of structure.

base

(bās) [TA]
1. The lower part or bottom; the part of a pyramidal or conic structure opposite the apex; the foundation.
Synonym(s): basis [TA] .
2. pharmacy The chief ingredient of a mixture.
3. chemistry An electropositive element (cation) that unites with an anion to form a salt; a compound ionizing to yield hydroxyl ion.
Synonym(s): alkali (2) .
4. Nitrogen-containing organic compounds (e.g., purines, pyrimidines, amines, alkaloids, ptomaines) that act as Br̷ønsted bases.
5. A substance with a pH over 7.0, in contrast to an acid.
See also: Br̷ønsted base, Lewis base
[L. and G. basis]

base

A chemical compound that combines with an acid to form a salt and water. A term applied in genetics to one of the four nitrogenous bases of DNA and RNA. In DNA the bases are adenine, thymine, guanine and cytosine. Guanine and adenine are purines and cytosine and thymine are pyrimidines. In RNA, the pyrimidine base uracil replaces thymine. (See also BASE PAIR).

base

  1. a chemical substance which has a tendency to accept protons (H+); the base dissolves in water with the production of hydroxyl ions and reacts with acids to form salts.
  2. one of the PURINE or PYRIMIDINE components of NUCLEOTIDES.

base

(bās) [TA]
1. The lower part or bottom; the part of a pyramidal or conic structure opposite the apex (e.g., heart); the foundation.
Synonym(s): basement (1) .
2. pharmacy the chief ingredient of a mixture.
3. A substance with a pH over 7.0, in contrast to an acid.
[L. and G. basis]

Patient discussion about base

Q. i am diabetic :( what is the right diet for me? should i avoid sugar based products? what is the amount of sugar in the blood that consider to be normal ?

A. You may find it all here:

www.nlm.nih.gov/medlineplus/diabeticdiet.html

Q. where is the greatest data base of Fibromyalgia over the net? do someone know the address ? will i find all my answers there ? is it like here where you can chat with other patient ?

A. i looked for information about Fibromyalgia all around the web and the best site gathering reliable information on it is:
http://www.nlm.nih.gov/medlineplus/fibromyalgia.html

gives you every web page about it and with a quality stamp :)


Q. Is good Nutrition is the base of a good and healthy life?

A. good nutrition will not solve all your health problems in life, you can still have infections and other health problems but it will reduce the amount of it in dramatic way.

More discussions about base
References in periodicals archive ?
- Cryotherapy-Based Lesion Destruction, Base Year 5-Year Forecast, China
Royal Challengers Bangalore also selected Saurashtra fast bowler Jaydev Unadkat for 525,000 dollars (base price 100,000 dollars); Pankaj Singh for 150,000 dollars (base price 50,000 dollars) and West Indian fast bowler Ravi Rampaul for 290,000 dollars (base price 50,000 dollars).
In a list of HEA reauthorization recommendations originally transmitted to Congress in 2003, NASFAA advocated the phase-out of the base guarantee over time, moving toward a funds allocation model that uses only the fair share methodology.
As sufficient quantities of antiviral drugs were not readily available at that time, >2,200 doses of influenza vaccine were rapidly transported on outbreak day 4 to the base for use in an immediate mass vaccination campaign.
Off the coast of Henoko village, where the new base is slated for construction, surveys recently uncovered 1,000 types of mollusks--including several that were previously undiscovered.
Finally, the stone base must be laser graded to ensure that the field has tolerances that are right on the money.
Could it be extended or supplemented to provide sufficient taxation input for IAS to form the starting point for the tax base?
The decision was made to resect the suspected meningoencephalocele, identify the skull base defect, and repair it to reduce and perhaps eliminate the risk of ascending meningitis.
If you base incentive compensation solely on clinical productivity, then you must standardize your productivity measure to allow comparison between full-time and part-time clinicians.
A state highway now bisects the former base compound.
When B-52 Stratofortresses from Barksdale Air Force Base outside Shreveport, Louisiana, fly their missions, they lift off from a runway adjoining 20,000 acres of pine and mixed hardwood forest where 1,600 acres of newly restored wetlands support a thriving population of wood ducks, herons, bald eagles, beavers, otters, and deer.
Glenn Maxwell $200,000 (base price) - sold for $1million