1. action spectrum the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation
  2. emission spectrum spectrum of electromagnetic radiation emitted by a self-luminous source
  3. color spectrum the distribution of colors produced when light is dispersed by a prism
  4. acoustic spectrum the distribution of energy as a function of frequency for a particular sound source
  5. absorption spectrum the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
  6. atomic spectrum (physics) a spectrum of radiation caused by electron transitions within an atom; the series of spectrum lines is characteristic of the element
  7. 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
  8. perspective a way of regarding situations or topics
  9. radio spectrum the entire spectrum of electromagnetic frequencies used for communications; includes frequencies used for radio and radar and television
  10. suction lipectomy lipectomy (especially for cosmetic purposes) in which excess fatty tissue is removed from under the skin by suction
  11. respect regard highly; think much of
  12. spectrum a broad range of related objects, values, or qualities
  13. microwave spectrum the part of the electromagnetic spectrum corresponding to microwaves
  14. inspector an investigator who observes carefully
  15. conspectus an overall summary
  16. visible spectrum the distribution of colors produced when light is dispersed by a prism
  17. motion picture a form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement
  18. speech spectrum the average sound spectrum for the human voice
  19. genus Aplectrum a monocotyledonous genus of the family Orchidaceae
  20. sound spectrum the distribution of energy as a function of frequency for a particular sound source