base

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base:

see acids and basesacids and bases,
two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Properties
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

Base

The lowest and most visible part of a building, often treated with distinctive materials, such as rustication; also pertains to the lowest part of a column or pier that rests on a pedestal, plinth or stylobate.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Base

 

in electrical and radio engineering, a component of an electron or ion device, such as an incandescent lamp, a fluorescent lamp, or an electron tube. The base is used to install the device in, for example, a socket and to provide the connection between the elements within the device, such as the filaments or the electrodes, and the external electric circuit.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

base

[bās]
(chemistry)
Any chemical species, ionic or molecular, capable of accepting or receiving a proton (hydrogen ion) from another substance; the other substance acts as an acid in giving of the proton. Also known as Brønsted base.
(chemical engineering)
The primary substance in solution in crude oil, and remaining after distillation.
(computer science)
(electronics)
The region that lies between an emitter and a collector of a transistor and into which minority carriers are injected.
The part of an electron tube that has the pins, leads, or other terminals to which external connections are made either directly or through a socket.
The plastic, ceramic, or other insulating board that supports a printed wiring pattern.
(engineering)
Foundation or part upon which an object or instrument rests.
(genetics)
(graphic arts)
A transparent plastic film on which a photographic emulsion is applied.
(lapidary)
(mathematics)
A side or face upon which the altitude of a geometric configuration is thought of as being constructed.
For a logarithm, the number of which the logarithm is the exponent.
For a number system, the number whose powers determine place value.
For a topological space, a collection of sets, unions of which form all the open sets of the space.
(ordnance)
Station or installation from which military forces operate and from which supplies are obtained.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

base

bases, 3
1. The lowest (and often widest) visible part of a building, often distinctively treated. A base is distinguished from a foundation or footing in being visible rather than buried.
2. A low, thickened section of a wall; a wall base. Also see socle.
3. Lower part of a column or pier, wider than the shaft, and resting on a plinth, pedestal, podium, or stylobate. Also see Asiatic base, Attic base.
4. A baseboard; skirting.
5. A preparation for a finished surface, as for flooring, stucco, paint, etc.; a surface to which the base coat of plaster is applied. Also see backing, ground.
6. In paint, either the medium or the main chemical ingredient.
7. In asphaltic or portland cement concrete paving, the prepared bottom course of crushed stone or gravel upon which subsequent courses are laid; serves to distribute localized wheel loads over a larger subbase and hence to improve load-bearing capacity.
8. The lowest point of any vertical pipe.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

base

base
base
i. A location where aircraft with all facilities are based. Refers to an air force base, naval air station, and fixed base operator.
ii. In air traffic control phraseology and when transmitted on the radio, it means turning onto the base leg of the circuit pattern. The base leg, as it is known, is flown at right angles to the runway, just before turning to the final direction for landing.
iii. In photogrammetry, the distance at the scale of the stereoscopic model between adjacent perspective centers as reconstructed in the plotting instrument. Also called an air base.
iv. In military radio telephony usage, it means the airfield from which the mission was launched, as in “return to base.”
v. The same as base course.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

base

1
1. a chemical compound that combines with an acid to form a salt and water. A solution of a base in water turns litmus paper blue, produces hydroxyl ions, and has a pH greater than 7. Bases are metal oxides or hydroxides or amines
2. Biochem. any of the nitrogen-containing constituents of nucleic acids: adenine, thymine (in DNA), uracil (in RNA), guanine, or cytosine
3. the inorganic material on which the dye is absorbed in lake pigments; carrier
4. Biology
a. the part of an organ nearest to its point of attachment
b. the point of attachment of an organ or part
5. Architect
a. the lowest division of a building or structure
b. the lower part of a column or pier
6. the lower side or face of a geometric construction
7. Maths
a. the number of distinct single-digit numbers in a counting system, and so the number represented as 10 in a place-value system
b. (of a logarithm or exponential) the number whose powers are expressed
c. (of a mathematical structure) a substructure from which the given system can be generated
d. the initial instance from which a generalization is proven by mathematical induction
8. Logic Maths the initial element of a recursive definition, that defines the first element of the infinite sequence generated thereby
9. Electronics the region in a transistor between the emitter and collector
10. Photog the glass, paper, or cellulose-ester film that supports the sensitized emulsion with which it is coated
11. a starting or finishing point in any of various games
12. Baseball any of the four corners of the diamond, which runners have to reach in order to score

base

2
1. English history
a. (of land tenure) held by villein or other ignoble service
b. holding land by villein or other ignoble service
2. Music an obsolete spelling of bass
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

base

(mathematics)
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

base

(1) A starting or reference point.

(2) In a bipolar transistor, the elements that act as a switch. In NMOS and PMOS transistors, which make up CMOS circuits, the base is called the "gate." See transistor.

(3) A multiplier in a numbering system. In a decimal system, each digit position is worth 10x the position to its right. In binary, each digit position is worth 2x the position to its right.

(4) (Base) The database program in an office suite. See OpenOffice and LibreOffice.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Changes in surface hydrophobicity (SoANS) of NAM extracted from the Basa fillet subjected to frozen storage are shown in Figure 3.
Hasta Grubunda Basa Cikma Tutumlarini Degerlendirme Olceginin sorun odakli basa cikma alt olcegi puanlari; cok yonlu beden-self iliskileri olcegi total puanlari ile pozitif yonde zayif derecede (r=0,41, p<0,05), Bath Ankilozan Spondilit Fonksiyonel Kapasite Olcegi puanlari ile negatif yonde zayif derecede korelasyon gostermistir (r=-0,32, p<0,05).
Verilerin Toplanmasi: Veriler stresle basa cikma duzeylerindeki degisimi izleyebilmek amaciyla, ogrencilerin ilk egitime basladiklari hafta (19.10.2009), ilk donemin tamamlandigi hafta (18.01.2010) ve 1.
That doesn't explain why the states chose to ban all Vietnamese basa, rather than simply trace the tainted ones back to the specific supplier that sent them stateside.
The congressman said he would continue his efforts to halt the importation of the basa fish until a complete investigation can be done by appealing to the Department of Commerce and the U.S.
US imports of frozen Vietnamese catfish reached $63 million in value last year, despite passage of a law forbidding Vietnam to call its tra and basa "catfish." Under pressure from domestic catfish producers, the DOC fast-tracked anti-dumping action as a matter of "critical circumstances" calling for retroactive punitive tariffs back to last October.
It is no longer news about how most of the over 80 BASA agreements these ministry officials had signed on behalf of the country have been found to be the bane of the entire sector as witnessed in the highly imbalanced and disadvantageous statuses of the agreements to the country.
Authorities identified the fatalities as Maricel Basas, her children Robert, 10, Langoy, 4, JP, 2, and three-month-old Niao as well as her nephew Eduardo Roxas, 8.
BASA also said that it would do all it can to ensure that former VBS clients continue to have access to their savings and investments and banking services.