Be Careful!Note that this sense of the word bass is pronounced /bæs/. The part of an organ nearest its point of attachment. Aqueous base solution or molten bases dissociate into ions and conduct electricity. Definition of base in the Definitions.net dictionary. Base refers to the production forces, or the materials and resources, that generate the goods society needs. A substance capable of reacting with an acid to form a salt and water, or (more broadly) of accepting or neutralizing hydrogen ions. Each of the four stations that must be reached in turn to score a run. an electrode or terminal on a transistor other than the emitter or collector electrodes or terminals. Published by Houghton Mifflin Harcourt Publishing Company. The base of something is usually the foundation, starting point, or main ingredient of something. A basic solution has a pH greater than 7. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. held by tenure less than freehold in return for a service viewed as somewhat demeaning to the tenant. the bottom support; that on which something stands; a fundamental principle; basis; foundation: Place the vase on the base. A line or surface on which a figure is regarded as standing. based her conclusions on the report; a film based on a best-selling novel. Their aqueous solutions have a bitter taste. It facilitates the creation of other classes that can reuse the code implicitly inherited from the base class (except constructors and destructors). The American Heritage® Stedman's Medical Dictionary Rouelle defined a neutral salt as the product of the union of an acid with another substance that acted as a "base" for the salt. Base and superstructure are two linked theoretical concepts developed by Karl Marx, one of sociology's founders. Our editors will review what you’ve submitted and determine whether to revise the article. Published by Houghton Mifflin Company. Bases are metal oxides or hydroxides or amines, any of the nitrogen-containing constituents of nucleic acids: adenine, thymine (in DNA), uracil (in RNA), guanine, or cytosine, a medium such as oil or water in which the pigment is dispersed in paints, inks, etc; vehicle, the inorganic material on which the dye is absorbed in lake pigments; carrier, the part of an organ nearest to its point of attachment, the point of attachment of an organ or part, the lowest division of a building or structure, the lower side or face of a geometric construction, the number of distinct single-digit numbers in a counting system, and so the number represented as, the binary system has two digits, 0 and 1, and 10 to base two represents 2, (of a logarithm or exponential) the number whose powers are expressed, since 1000 = 10³, the logarithm of 1000 to base 10 is 3, (of a mathematical structure) a substructure from which the given system can be generated, the initial instance from which a generalization is proven by mathematical induction, the initial element of a recursive definition, that defines the first element of the infinite sequence generated thereby, the region in a transistor between the emitter and collector, the glass, paper, or cellulose-ester film that supports the sensitized emulsion with which it is coated, the quality factor used in pricing natural pearls, a starting or finishing point in any of various games, any of the four corners of the diamond, which runners have to reach in order to score, the main source of a certain commodity or element, to accomplish the first stage in a project or a series of objectives, to station, post, or place (a person or oneself), devoid of honour or morality; ignoble; contemptible, (of land tenure) held by villein or other ignoble service, holding land by villein or other ignoble service. If the salt is saturated or insoluble, then it may precipitate out of the solution. A base displays several characteristic properties: Bases may be categorized according to their degree of dissociation in water and reactivity. to touch all the bases, to cover the bases (=, Happily, Barbicane, not content with employing water, had furnished the movable disc with strong spring plugs, destined to lessen the shock against the, Our Soldiers and Lowest Classes of Workmen are Triangles with two equal sides, each about eleven inches long, and a, The suggestion was a good one, for thus many valuable minutes might be saved to us, and, throwing every ounce of my earthly muscles into the effort, I cleared the remaining distance between myself and the cliffs in great leaps and bounds that put me at their, "This brings us to another point, more difficult to accept and understand than any other requiring belief in a, Unhinge the lower jaw, and the side view of this skull is as the side view of a moderately inclined plane resting throughout on a level, He was instinctively and thoroughly convinced that was impossible for him to live otherwise than as he did and that he had never in his life done anything, Mercury soon appeared and said to him, "O thou most. the hydroxide of a metal or of an electropositive element or group. Types of bases include Arrhenius base, Bronsted-Lowry base, and Lewis base. characteristic of or befitting an inferior person or thing. plural of base and of basis: All the bases are covered. The Bronsted-Lowry acid-base theory includes the concepts of conjugate acids and conjugate bases. When an acid dissociates into its ions in water, it loses a hydrogen ion. to have a basis; be based (usually followed by. The species that is formed is the acid's conjugate base. Any of a class of compounds that form hydroxyl ions (OH) when dissolved in water, and whose aqueous solutions react with acids to form salts. Lémery used the word as a synonym for Paracelsus' alchemical concept of a "matrix" in alchemy. a group or molecule that takes up or accepts protons. Oils may be mixed with a base and massaged into the skin. Fluctuating prices usually base on a fickle public's demand. Briefly make or renew contact with someone. Meaning of base. A nitrogen-containing organic compound that combines in such a manner. Meaning of science-based. 2A conceptual structure or entity on which something draws or depends. A molecular or ionic substance capable of combining with a proton to form a new substance. By using ThoughtCo, you accept our, How a Neutralization Reaction Works in Salt Formation, Definition and Examples of Acid-Base Indicator, Buffer Definition in Chemistry and Biology, Weak Acid Definition and Examples in Chemistry, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College. a compound that reacts with an acid to form a salt, as ammonia, calcium hydroxide, or certain nitrogen-containing organic compounds. Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. A main or important element or ingredient to which other things are added. Examples of bases include hydroxides and soap. See more. Love has the power to overcome the baser emotions. The mechanism through which a base works has been argued throughout history. The squadron is based on a carrier. a supply installation for a large military force. A number in terms of which other numbers are expressed as logarithms. Information and translations of science-based in the most comprehensive dictionary definitions resource on the web.
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