Definitions for Spectrumˈspɛk trəm

This page provides all possible meanings and translations of the word Spectrum

Random House Webster's College Dictionary

spec•trumˈspɛk trəm(n.)(pl.)-tra; -trums.

  1. an array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass. the band or series of colors, together with invisible extensions, produced by dispersion of radiant energy, as by a prism.

    Category: Physics

  2. a broad range of varied but related ideas, objects, etc., that form a continuous series or sequence:

    the spectrum of political beliefs.

Origin of spectrum:

1605–15; < L: appearance, form <spec(ere) to look, regard

Princeton's WordNet

  1. spectrum(noun)

    an ordered array of the components of an emission or wave

  2. spectrum(noun)

    a broad range of related objects or values or qualities or ideas or activities

Wiktionary

  1. spectrum(Noun)

    Specter, apparition.

  2. spectrum(Noun)

    A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.

  3. spectrum(Noun)

    Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.

  4. spectrum(Noun)

    The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).

  5. spectrum(Noun)

    The set of eigenvalues of a matrix.

  6. spectrum(Noun)

    Of a bounded linear operator A, the set of scalar values u03BB such that the operator Au2014u03BBI, where I denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear algebra sense.

  7. Origin: From spectrum, from specio. (see scope)

Webster Dictionary

  1. Spectrum(noun)

    an apparition; a specter

  2. Spectrum(noun)

    the several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope

  3. Spectrum(noun)

    a luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum

Freebase

  1. Spectrum

    A spectrum is a condition that is not limited to a specific set of values but can vary infinitely within a continuum. The word saw its first scientific use within the field of optics to describe the rainbow of colors in visible light when separated using a prism; it has since been applied by analogy to many fields other than optics. Thus, one might talk about the spectrum of political opinion, or the spectrum of activity of a drug, or the autism spectrum. In these uses, values within a spectrum may not be associated with precisely quantifiable numbers or definitions. Such uses imply a broad range of conditions or behaviors grouped together and studied under a single title for ease of discussion. In most modern usages of spectrum there is a unifying theme between extremes at either end. Some older usages of the word did not have a unifying theme, but they led to modern ones through a sequence of events set out below. Modern usages in mathematics did evolve from a unifying theme, but this may be difficult to recognize.

The Nuttall Encyclopedia

  1. Spectrum

    the name given to coloured and other rays of pure light separated by refraction in its transmission through a prism, as exhibited on a screen in a darkened chamber.

British National Corpus

  1. Nouns Frequency

    Rank popularity for the word 'Spectrum' in Nouns Frequency: #1872


Translations for Spectrum

Kernerman English Multilingual Dictionary

spectrum(noun)

the visible spectrum.

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