noun (plural spectra or spectrums) Etymology: New Latin, from Latin, appearance — more at specter Date: 1671 1. a. a continuum of color formed when a beam of white light is dispersed (as by passage through a prism) so that its component wavelengths are arranged in order b. any of various continua that resemble a color spectrum in consisting of an ordered arrangement by a particular characteristic (as frequency or energy): as (1) electromagnetic spectrum (2) radio spectrum (3) the range of frequencies of sound waves (4) mass spectrum c. the representation (as a plot) of a spectrum 2. a. a continuous sequence or range <
a wide spectrum of interests
opposite ends of the political spectrum
b. kinds of organisms associated with a particular situation (as an environment) c. a range of effectiveness against pathogenic organisms <
an antibiotic with a broad spectrum

New Collegiate Dictionary. 2001.


Look at other dictionaries:

  • Spectrum — Spec trum, n.; pl. {Spectra}. [L. See {Specter}.] 1. An apparition; a specter. [Obs.] [1913 Webster] 2. (Opt.) (a) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed… …   The Collaborative International Dictionary of English

  • spectrum — UK US /ˈspektrəm/ noun [C] ► a range of similar things: a spectrum of sth »A methodology will have to be developed to gradually cover the entire spectrum of technologies. »a wide/broad spectrum the economic/business/political spectrum »He has… …   Financial and business terms

  • spectrum — [spek′trəm] n. pl. spectra [spek′trə] or spectrums [ModL, special use (by NEWTON2 Sir Isaac, 1671) of L spectrum: see SPECTER] 1. the series of colored bands dispersed and arranged in the order of their respective wavelengths by the passage of… …   English World dictionary

  • Spectrum — puede referirse a: Sinclair ZX Spectrum, popular ordenador de 8 bits; The Spectrum, pabellón deportivo de la ciudad de Filadelfia. Esta página de desambiguación cataloga artículos relacionados con el mismo título. Si llegaste aquí a través de …   Wikipedia Español

  • spectrum — (n.) 1610s, apparition, specter, from L. spectrum appearance, image, apparition, from specere to look at, view (see SCOPE (Cf. scope) (1)). Meaning band of colors formed from a beam of light first recorded 1670s …   Etymology dictionary

  • spectrum — ► NOUN (pl. spectra) 1) a band of colours produced by separation of the components of light by their different degrees of refraction, e.g. in a rainbow. 2) the entire range of wavelengths of electromagnetic radiation. 3) a characteristic series… …   English terms dictionary

  • Spectrum — Spectrum, lat., Bild, Gespenst; in der Physik eine begränzte Stelle in der Luft oder auf einer Fläche, auf der sich ein strahlendes Fluidum (Licht, Wärme) gleichsam abbildet …   Herders Conversations-Lexikon

  • spectrum — has the plural form spectra …   Modern English usage

  • spectrum — {{/stl 13}}{{stl 7}}[wym. spektrum]{{/stl 7}}{{stl 17}}ZOB. {{/stl 17}}{{stl 7}}spektrum {{/stl 7}} …   Langenscheidt Polski wyjaśnień

  • Spectrum+ — ZX Spectrum Тип Домашний компьютер Выпущен 23 апреля 1982 года Выпускался по декабрь 1990 года Процессор Z80, 3,5 МГц …   Википедия

  • Spectrum — ZX Spectrum Тип Домашний компьютер Выпущен 23 апреля 1982 года Выпускался по декабрь 1990 года Процессор Z80, 3,5 МГц …   Википедия

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