单词 | mapping |
释义 | mappingn. 1. a. The drawing, making, or provision of a map or maps; charting, recording, or setting out on or as on a map; planning; an instance of this. Also with out, down. ΘΚΠ the world > the earth > earth sciences > geography > map-making > [noun] platting1582 mapping1727 chartography1851 cartography1859 the mind > will > intention > planning > [noun] compassinga1300 compassmentc1300 ordainingc1350 ordinancec1385 imaginationa1393 conjectmentc1400 before-castinga1425 forecastinga1425 imagininga1449 conjectinga1450 machinationc1550 platforming1560 plotting1593 contrivement1599 agitation1600 contrival1602 contrivage1610 projection1611 projectment1611 contrivance1647 politics1650 digestion1680 planning1730 contriving1751 scheme1790 scheming1813 schemery1822 replanning1853 mapping1856 macroplanning1966 1727–52 E. Chambers Cycl. at Surveying Surveying consists of three parts or members;..the second we call plotting, or protracting, or mapping. 1849 R. I. Murchison Siluria v. 93 Corrections being made in the mapping of faults and strata. 1856 E. B. Browning Aurora Leigh ix. 399 Less mapping out of masses, to be saved. 1860 ‘G. Eliot’ Mill on Floss I. ii. i. 258 When the miller talked of ‘mapping’ and ‘summing’ in a vague and diffident manner. 1868 W. Lockyer & J. N. Lockyer tr. A. Guillemin Heavens (ed. 3) 390 The actual mapping down of the spectra of several of the brightest stars. 1904 B. von Hutten Pam 107 I..refusing to map out her future life..she intends doing that mapping herself. a1933 J. A. Thomson Biol. for Everyman (1934) I. vii. 131 A provisional mapping-out of Ways of Living is here attempted. 1962 Daily Tel. 28 Aug. 13/5 Line scan is a system for reconnaissance and mapping at low levels. 1972 Daily Tel. 24 Feb. 22/4 These mappings are usually ordered by the local authority to help census returns, gauge traffic flows and land uses. The photographs are available to anyone. 1992 Independent 16 Apr. 5/1 Three years ago, James Ryan made legal history as the first man to be convicted by a revolutionary new forensic technique called ‘facial mapping’. b. Genetics. The making of a genetic map (map n.1 3b); the process of determining the position of a gene or nucleotide sequence in relation to other parts of a chromosome or genome. ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > the making of a genetic map mapping1935 1935 L. H. Snyder Princ. Heredity xv. 153 (heading) The mapping of chromosomes. 1965 Genetics 51 157 (heading) Mapping of temperature-sensitive mutants in bacteriophage T5. 1967 Jrnl. Molecular Biol. 27 163 (heading) Genetic mapping in Bacillus subtilis. 1970 E. J. Ambrose & D. M. Easty Cell Biol. x. 334 (heading) Gene mapping with Drosophila. 1992 National Forum 1 Nov. 12/1 Genome mapping of certain strains of mosquitoes is being done to find the genes that seem to make them less able to transmit diseases. c. Physiology. The investigation of the localization of the structure and function of the nervous system, esp. the cerebral cortex. ΚΠ 1965 Exper. Neurol. 13 358 (caption) Composite mapping of the optic fiber projection on the optic tectum in the 12-day embryo. 1971 Acta Physiol. Scand. Suppl. 367 1 (title) Stereotaxic mapping of the monoamine pathways in the rat brain. 1996 Jrnl. Neurooncol. 27 270/2 Intraoperative techniques such as cortical mapping and ultrasound can be useful to minimize damage to vital areas. 2. a. Mathematics. A correspondence by which each element of a given set has associated with it one element (occasionally, one or more elements) of a second set.Some topologists use transformation in this sense and mapping in the narrower sense of a continuous transformation. ΘΚΠ the world > relative properties > number > arithmetic or algebraic operations > transformation > [noun] > correspondence correspondence1866 mapping1900 transformation1908 map1949 arrow1961 1900 Trans. Amer. Math. Soc. 1 107 In this mapping the focus −a2/β corresponds to t = ∞, the point x = ∞ to t = −a/β. 1931 H. P. Robertson tr. H. Weyl Theory of Groups & Quantum Mech. iii. 110 A mapping or correspondence S..is determined by a law which associates with each point p of the field a point p′ as image. 1958 G. T. Whyburn Topol. Anal. ii. 24 A continuous transformation will be called a mapping. 1964 W. J. Pervin Found. Gen. Topol. i. 10 Other terms for mapping are ‘function’, ‘transformation’, and ‘operator’. 1968 M. Bruckheimer et al. Math. for Technol. ii. 17 An example of a one–many mapping is the mapping a→±√a of the set of non-negative real numbers to the set of all real numbers. 1971 Nature 17 Dec. 396/2 The ideal transducer..neither stores nor dissipates energy; viewed as a mapping from input space, (e1,f1), to output space (e2,f2), e1f1+e2f2=o. 1982 W. S. Hatcher Logical Found. Math. i. 2 Negation is a mapping from sentences into sentences. b. Linguistics. The (degree of) correspondence between associated elements of different types or at different levels within a linguistic process or scheme. ΘΚΠ the mind > language > linguistics > [noun] > specific features of linguistic analysis structuring1890 over-differentiation1921 hypostasis1933 contextualization1934 scatter1934 opposition1936 minimality1953 mapping1955 biuniqueness1959 linearity1959 n-gram1963 meta-condition1972 optionality1972 1955 N. Chomsky Theory Ling. Struct. (microfilm, Mass. Inst. Technol.) ii. 631 The relations between L and other levels can be presented as a set of mappings defined on L. 1955 N. Chomsky Theory Ling. Struct. (microfilm, Mass. Inst. Technol.) ii. 64 Φ is a mapping which, in particular, maps μ into the set of grammatical utterances. 1971 Language 47 8 This overwhelming predominance of many-one mapping over one-many, as we move from semantics to phonetics, can then be seen as further evidence of language's directionality. 1987 Multilingua 6 319 The more syntax is more often ambiguous or vague, the mapping between expression and meaning more often indirect. 1992 Lit. & Ling. Computing 7 234/2 A sentence in English may have one-to-many mapping to many different structures in Chinese. c. Computing. An association of an item of data with a specified location in a computer memory; an association of a memory location with a data item. ΚΠ 1971 I. Flores Computer Programming System/360 ix. 210 A one-to-one mapping is impractical because it requires a list in memory as large as the population. 1980 C. S. French Computer Sci. xxvi. 207 Hash table mapping functions are allowed to be ambiguous ie generate the same location address for two different keys. 1992 Dr. Dobb's Jrnl. Sept. 22/2 The mapping from a logical segment to its allocated selector (and hence, its physical address) can be found in the segment table inside a module table. Compounds mapping pen n. a pen, esp. a dip pen, with a very fine nib. ΘΚΠ society > communication > writing > writing materials > writing instrument > [noun] > pen > pen for specific use text-pen1589 mapping pen1840 music-pen1840 rastrum1876 highlighter1963 plotter pen1965 wheel pen- 1840 Voucher in D. Jackson & M. L. Spence Exped. J. C. Frémont (1970) I. 91 1 card mapping pens..1.25 [dollars]. 1909 Daily Chron. 18 Sept. 10/6 The tiny pin-pointed mapping pen. 1970 M. Gilmore World Away 76 He sat ensconced behind his drawing board, trapped by it and the fine mapping pens and Indian ink which he used. 1992 J. Curtis Sons of Morning 151 He took a mapping pen and wrote on to the markers the dates when the killings had occurred. This entry has been updated (OED Third Edition, September 2000; most recently modified version published online June 2022). < n.1727 |
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