| BB | bad breath; bed bath; beta blockade, beta blocker; BioBreeding [rat]; blanket bath; blood bank; bloo... |
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| BBB | blood-brain barrier; blood buffer base; bundle-branch block |
| BE | bacillary emulsion; bacterial endocarditis; barium enema; Barrett's esophagus; base excess; below-el... |
| BH | base hospital; benzalkonium and heparin; bill of health; birth history; Bishop-Harman [instruments];... |
| BI | background interval; bacterial or bactericidal index; base-in [prism]; basilar impression; Billroth ... |
| base pair | <molecular biology> Two nitrogenous bases (adenine and thymine or guanine and cytosine) held together by weak bonds. Two strands of DNA are held together in the shape of a double helix by the bonds between base pairs. (09 Oct 1997) |
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| base pairing | <molecular biology> The specific hydrogen bonding between purines and pyrimidines in double stranded nucleic acids. In DNA the pairs are adenine and thymine and guanine and cytosine, while in RNA they are adenine and uracil and guanine and cytosine. Base pairing leads to the formation of a DNA double helix from two complementary single strands. (15 Nov 1997) |
| base projection | Radiographic projection devised to obtain direct visualization of the base of the skull. Synonym: axial view, base projection, submental vertex projection, submentovertical projection, verticosubmental view. (05 Mar 2000) |
| base sequence | <molecular biology> The order of nucleotide bases in a DNA molecule. (09 Oct 1997) |
| base sequence analysis | <molecular biology> A method, sometimes automated, for determining the base sequence. (09 Oct 1997) |
| base substitution | <molecular biology> One nucleotide base is replaced by another in a DNA molecule. This is also called a point mutation. (09 Oct 1997) |
| base units | The fundamental unit's of length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity in the International System of Units (SI); the names and symbols of the unit's for these quantities are meter (m), kilogram (kg), second (s), ampere (A), kelvin (K), mole (mol), and candela (cd). See: International System of Units. (05 Mar 2000) |
| base view | A radiographic projection showing the base of the skull, positions of the mandibular condyles, and zygomatic arches. Synonym: base view, submental vertex radiograph. (05 Mar 2000) |
| base-stacking | A clustering of DNA or RNA bases in which the rings lie on top of each other. (05 Mar 2000) |
| baseball | A competitive nine-member team sport including softball. (12 Dec 1998) |
| baseball coil | <radiobiology> Used in magnetic-mirror geometries to produce a minimum-B configuration, so-called because of their resemblance to the characteristic shape of stitches on a baseball. (09 Oct 1997) |
| baseball elbow | An epicondylitis of the medial epicondyle at the origin of the flexor muscles of the forearm; related to throwing and usually seen in children or adolescents. (05 Mar 2000) |
| baseball finger | An avulsion, partial or complete, of the long finger extensor from the base of the distal phalanx. Synonym: drop finger, hammer finger, mallet finger. (05 Mar 2000) |
| baseboard | A board, or other woodwork, carried round the walls of a room and touching the floor, to form a base and protect the plastering; also called washboard (in England), mopboard, and scrubboard. Source: Websters Dictionary (01 Mar 1998) |
| baseborn | 1. Born out of wedlock. 2. Born of low parentage. 3. Vile; mean. "Thy baseborn heart." Source: Websters Dictionary (01 Mar 1998) |
| hydroxy-Y base | <chemical> Chemical name: 1h-imidazo(1,2-a)purine-7-butanoic acid, 4,9-dihydro-beta-hydroxy-alpha-((methoxycarbonyl)amino)-4,6-dimethyl-9-oxo-, methyl ester Synonym: alpha-(carboxyamino)-beta-hydroxy-4,9-dihydro-4,6- dimethyl-9-oxo-1h-imidazo(1,2-a)purine-7-butyric acid dimethyl ester (26 Jun 1999) |
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| skull base | The internal and external base of the cranium: respectively the inner and outer surfaces of the inferior region of the skull. The internal base constitutes the floor of the cranial cavity. (12 Dec 1998) |
| skull base neoplasms | Neoplasms of the base of the skull specifically, differentiated from neoplasms of unspecified sites or bones of the skull (skull neoplasms). (12 Dec 1998) |
| negative base excess | A measure of metabolic acidosis, usually predicted from the Siggaard-Andersen nomogram; the amount of strong alkali that would have to be added per unit volume of whole blood to titrate it to pH 7.4 while at 37°C and at a carbon dioxide pressure of 40 mm Hg. (05 Mar 2000) |
| nitrogenous base | <biochemistry> A nitrogen-containing molecule having the chemical properties of a base. (09 Oct 1997) |
| nucleic acid base | A purine or pyrimidine; found in naturally occurring nucleic acids such as DNA. (05 Mar 2000) |
| nucleinic base | An obsolete term for purine. (05 Mar 2000) |
| denture base | That part of a denture which rests on the oral mucosa and to which teeth are attached, that part of a complete or partial denture which rests upon the basal seat and to which teeth are attached. Synonym: saddle. (05 Mar 2000) |
| dissociation constant of a base | Expressed by the general equation [B+][OH-]/[BOH] = Kb, where BOH is the undissociated base. (05 Mar 2000) |
| internal base of skull | <anatomy> The interior aspect of the skull base on which the brain rests; the floor of the cranial cavity. See: base of skull. Synonym: basis cranii interna. (05 Mar 2000) |
| ointment base | The vehicle into which active ingredients may be incorporated. Petrolatum (which may be stiffened with wax) is the most widely used greasy ointment base and is suitable for the incorporation of oleaginous materials. Lin-containing bases will absorb water (and dissolved materials) and form water-in-oil type emulsions. Water soluble (washable) bases are often derived from polymers of ethylene glycol (PEGS); these will absorb water and ingredients dissolved in the water. Ointment bases are usually pharmacologically inert but may entrap water and serve to keep the skin from dying or to provide an emollient protective film. (05 Mar 2000) |
| temporary base | <cell biology> A hypothetical cell adhesion molecule possibly involved in sponge cell adhesion, existence unproven. (18 Nov 1997) |
| tinted denture base | A denture base that simulates the colouring and shading of natural oral tissues. (05 Mar 2000) |
| tooth-borne base | The denture base restoring an edentulous area which has abutment teeth at each end for support; the tissue which it covers is not used for support. (05 Mar 2000) |
| trial base | <cell biology> A hypothetical cell adhesion molecule possibly involved in sponge cell adhesion, existence unproven. (18 Nov 1997) |
| base pair |
A unit of nucleic acid length, based on the number of paired bases (adenine and thymine, guanine and cytosine) in a DNA double helix.
Ãâó: www.genpromag.com/Glossary~LETTER~B.html
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| base |
The chemical building blocks of DNA. Named A, T, C, and G (adenine, cytosine, thymine, and guanine), these bases pair up to form the "stairs" of the DNA double helix and always combine in the same patterns: A with T and C with G.
Ãâó: https://www5.nationalgeographic.com/genographic/gl...
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| basement membrane |
[BAYS-ment MEM-brain] a noncellular membrane underlying the epidermal cells of the body wall (exoskeleton).
Ãâó: members.aol.com/YESedu/glossary.html
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| base line |
in a line of script, the ruled line upon which the bodies of the letters rest
Ãâó: members.tripod.com/bibliomane/a_b.htm
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| base metal |
Any non-precious metal (eg. copper, lead, zinc, nickel, etc.)
Ãâó: www.angelfire.com/biz/BuildingPathology/durb.html
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| base | serving as or forming a base |
|---|---|
| base | not adhering to ethical or moral principles |
| base | (used of metals) consisting of or alloyed with inferior metal |
| base | the successful act of striking a baseball in such a way that the batter reaches base safely |
| base | installation from which a military force initiates operations |
| base | (baseball) an advance to first base by a batter who receives four balls |
| base | one of the pairs of chemical bases joined by hydrogen bonds that connect the complementary strands of a DNA molecule or of an RNA molecule that has two strands |
| base | (United Kingdom) the interest rate set by the Bank of England for lending to other banks |
| base | a baseball player on the team at bat who is on base (or attempting to reach a base) |
| base | yielding a base in aqueous solution |
| base | a ball game played with a bat and ball between two teams of 9 players |
| base | a ball used in playing baseball |
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