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illumination Definition

il·lu·mi·na·tion (i lo̵̅o̅′mə nās̸hən)

noun

  1. an illuminating or being illuminated; specif.,
    1. a lighting up; supplying of light
    2. clarification; explanation
    3. enlightenment; instruction
    4. decoration with lights
    5. decoration of manuscripts with designs, colors, etc.
  2. the intensity of light per unit of area
  3. the designs, tracings, etc. used in decorating manuscripts
  4. decorative lighting, as for a city

Etymology: ME illumynacyon < OFr illumination < LL illuminatio

illumination Synonyms

illumination

n.

  1. A light

    gleam, flame, brilliance, lighting; see flash 1, light 1, 3.

  2. Instruction

    teaching, education, information; see knowledge 1.

  3. Decoration

    flourish, ornament, embellishment; see decoration 1, 2.

illumination Usage Examples

Preposition: of

  • spirit: The mind is made conscious by the reflected illumination of the spirit.

Converse of object

  • adjust: The corded version is designed for LX200 and other telescopes that have a power output socket and handset controls for adjusting the reticle illumination.
  • vary: The methods of illumination varied with circumstances, but all were of a very crude character.
  • provide: In low light, the inbuilt photo light provides illumination to capture video or still images.

Adjective modifier

  • oblique: Also a look at some rather bizarre 19th century microscopes which took the use of oblique illumination a bit too far!
  • brightfield: Figure ( 1 ) was obtained with brightfield illumination.
  • darkfield: It is very easy to make darkfield illumination yourself.
  • dark-field: Dark-field illumination is also one of the most rewarding techniques.
  • transmitted: The unit consists of a heated flat plate with central hole for transmitted illumination.
  • dark-ground: Under the microscope, using dark-ground illumination, a single pollen covered filament can be seen to have spiked ridges.

Modifies a noun

  • gradient: Consider another example image containing a strong illumination gradient.
  • intensity: The field diaphragm controls the size of the illuminated field without affecting the illumination intensity of the area being observed.
  • angle: For such a surface the brightness drops off rapidly away from the illumination angle.
  • technique: DF exists already for many decades and matured into a well-understood and approved illumination technique.

Noun used with modifier

  • darkfield: You can quickly change LEDs say from white to green for phase contrast or color darkfield illumination.
  • brightfield: Normally, the flash exposure I would use with brightfield illumination would " freeze " the motion of the cilia.
  • annunciator: This particular device is manufactured with a flat-topped LED to provide excellent wide angle viewing for switchtop and annunciator illumination.
  • halogen: The range includes: StopClock Professional: the standard version suitable for almost all enlargers which use tungsten or halogen illumination.
  • night-time: For the duration the streets have many night-time street illuminations, leading to it becoming a popular visiting place for the festival's duration.
  • manuscript: If you would like to see a manuscript illumination of nuns in a wealthy convent, click here.
illumination Quotes

Painters who arenotcolourists produce illumination and not painting.

—Delacroix, (Ferdinand Victor) Euge'  ne

Politicians use statistics in the same way that a drunk uses lamp-postsöfor support rather than illumination.

—Lang, Andrew

Browse dictionary entries near illumination

  1. illuminati
  2. illuminated
  3. illuminate
  4. illuminant
  5. illuminance
  6. illume
  7. illogical
  8. illogic
  9. illocutionary
  10. illness
  1. illuminative
  2. illuminator
  3. illumine
  4. illuminism
  5. illus
  6. illusion
  7. illusionism
  8. illusionist
  9. illusive
  10. illusory