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SPECTRUM (spectra)

Pronunciation (US): 

 Dictionary entry overview: What does spectrum mean? 

SPECTRUM (noun)
  The noun SPECTRUM has 2 senses:

1. an ordered array of the components of an emission or wave
2. broad range of related values or qualities or ideas or activities

  Familiarity information: SPECTRUM used as a noun is rare.


 Dictionary entry details 


SPECTRUM (noun)


Sense 1spectrum [BACK TO TOP]

Meaning:

An ordered array of the components of an emission or wave

Classified under:

Nouns denoting natural phenomena

Hypernyms ("spectrum" is a kind of...):

array (an orderly arrangement)

Meronyms (parts of "spectrum"):

spectrum line (an isolated component of a spectrum formed by radiation at a uniform frequency)

Hyponyms (each of the following is a kind of "spectrum"):

absorption spectrum (the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths)

ultraviolet spectrum (the spectrum of ultraviolet radiation)

acoustic spectrum; sound spectrum (the distribution of energy as a function of frequency for a particular sound source)

radio spectrum; radio-frequency spectrum (the entire spectrum of electromagnetic frequencies used for communications; includes frequencies used for radio and radar and television)

microwave spectrum (the part of the electromagnetic spectrum corresponding to microwaves)

mass spectrum (a distribution of ions as shown by a mass spectrograph or a mass spectrometer)

line spectrum (a spectrum in which energy is concentrated at particular wavelengths; produced by excited atoms and ions as they fall back to a lower energy level)

infrared spectrum (the spectrum of infrared radiation)

emission spectrum (spectrum of electromagnetic radiation emitted by a self-luminous source)

electromagnetic spectrum (the entire frequency range of electromagnetic waves)

atomic spectrum ((physics) a spectrum of radiation caused by electron transitions within an atom; the series of spectrum lines is characteristic of the element)

action spectrum (the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation)

color spectrum; visible spectrum (the distribution of colors produced when light is dispersed by a prism)


Sense 2spectrum [BACK TO TOP]

Meaning:

Broad range of related values or qualities or ideas or activities

Classified under:

Nouns denoting attributes of people and objects

Hypernyms ("spectrum" is a kind of...):

ambit; compass; orbit; range; reach; scope (an area in which something acts or operates or has power or control:)


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