• WordNet 3.6
    • n illumination painting or drawing included in a book (especially in illuminated medieval manuscripts)
    • n illumination the luminous flux incident on a unit area
    • n illumination an interpretation that removes obstacles to understanding "the professor's clarification helped her to understand the textbook"
    • n illumination the degree of visibility of your environment
    • n illumination a condition of spiritual awareness; divine illumination "follow God's light"
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: Limelight was how we lit the stage before electricity was invented. Basically, illumination was produced by heating blocks of lime until they glowed.
    • Illumination Adornment of books and manuscripts with colored illustrations. See Illuminate v. t., 3.
    • Illumination Festive decoration of houses or buildings with lights.
    • Illumination That which illuminates or gives light; brightness; splendor; especially, intellectual light or knowledge. "The illumination which a bright genius giveth to his work."
    • Illumination That which is illuminated, as a house; also, an ornamented book or manuscript.
    • Illumination The act of illuminating, or supplying with light; the state of being illuminated.
    • Illumination (Theol) The special communication of knowledge to the mind by God; inspiration. "Hymns and psalms . . . are framed by meditation beforehand, or by prophetical illumination are inspired."
    • ***
Century Dictionary and Cyclopedia
    • n illumination Supply of light; emanation of luminous rays; light afforded by a luminous body or substance.
    • n illumination The act of illuminating, or the state of being illuminated; a lighting up; specifically, an unusual or profuse display of light; decoration by means of many lights, as in festivity or rejoicing: as, the illumination of a city.
    • n illumination Mental enlightenment; knowledge or insight imparted.
    • n illumination In a special use, the doctrine of the Illuminati; worship of enlightenment or knowledge.
    • n illumination Pictorial ornamentation of books and manuscripts by hand, as practised in the middle ages; adornment by means of pictures, designs, and letters in flat colors, gilt, etc., practised especially in devotional works: as, the art of illumination.
    • n illumination A representation or design in an illuminated work: as, the illuminations of a psalter.
    • n illumination Specifically, the measure of the amount of light falling on a surface. The illumination of a surface is proportional to the intensity of the source of light producing it, and it varies inversely as the square of the distance between the source and the illuminated surface. The unit of illumination is the lux, the illumination produced by a source of light having an intensity of one hefner and situated at a distance of one meter from the illuminated surface. Illumination is sometimes expressed in candle-meters (also written meter-candles), the candle-meter being the illumination produced by a standard candle at a distance of one meter. In countries where the standard candle has been defined as equal to the hefner, the candle-meter is the same as the lux. In those countries where British units still prevail, the unit of illumination is the candle-foot (also foot-candle), the illumination produced by a British standard candle at a distance of one foot. One candle-foot equals 12.2 luxes. The total flux of light from a given source is expressed in lumens, the lumen being the flux of light in a beam which subtends one unit of solid angle, the intensity of the source being one hefner. Since the unit solid angle subtends one square centimeter at a radius of one centimeter, the lux is the illumination produced by one lumen of light-flux per square centimeter of surface. Since the primary object of artificial lighting is to produce illumination, the establishment of a unit such as the lux, by means of which the illumination can be definitely measured and expressed, is of great importance in photometry. Instruments employed for the measurement of the intensity of the sources of light are called photometers. Any special form of photometer used for the direct determination of illumination is called a luminometer (sometimes written illuminometer). The illumination produced by different sources of artificial light under like conditions varies through a wide range. The following table gives results of the comparison of the light-sources commonly used in the projecting lantern, determined by measurement of the illumination received upon a screen.
    • n illumination In the pictorial arts, the quality and quantity of light expressed.
    • ***
Chambers's Twentieth Century Dictionary
    • n Illumination act of giving light: that which gives light: splendour: brightness: a display of lights: adorning of books with coloured lettering or illustrations:
    • n Illumination (B.) enlightening influence, inspiration
    • ***


  • Peter Abelard
    Peter Abelard
    “The purpose and cause of the incarnation was that He might illuminate the world by His wisdom and excite it to the love of Himself.”
  • Samuel Taylor Coleridge
    “To most men experience is like the stern lights of a ship, which illuminate only the track it has passed.”
  • Edwin Markham
    “The thing that is incredible is life itself. Why should we be here in this sun-illuminated universe? Why should there be green earth under our feet?”
  • Ernest Dimnet
    Ernest Dimnet
    “The history of the past interests us only in so far as it illuminates the history of the present.”
  • Ralph Waldo Emerson
    “To the dull mind all nature is leaden. To the illumined mind the whole world burns and sparkles with light.”
  • Bhagavad Gita
    Bhagavad Gita
    “To the illumined man or woman, a clod of dirt, a stone, and gold are the same.”


Webster's Revised Unabridged Dictionary
L. illuminatio,: cf. F. illumination,
Chambers's Twentieth Century Dictionary
L. illumināre, -ātumin, in, upon, lumināre, to cast light—lumen (=lucimen)—lucēre, to shine, light.


In literature:

In the evening all the metal and glass of the establishment helped to illuminate it with wonderful brilliancy.
"The Fat and the Thin" by Emile Zola
Their coaches, which you can hear grinding the wheels two leagues off, are illuminated, carved, and hung with ribbons.
"The Man Who Laughs" by Victor Hugo
He enjoyed the illumination and the solitude.
"The Roll-Call" by Arnold Bennett
He recognized this with confusion, and he apologized by a smile which illuminated his rather heavy, dark face.
"The House of Mystery" by William Henry Irwin
Odense was to be illuminated for me.
"Library Of The World's Best Literature, Ancient And Modern, Vol. 2" by Charles Dudley Warner
Sensibility to the beautiful is thus the light of the whole mind, illuminating its labors.
"Essays Æsthetical" by George Calvert
The principal work is printing, illuminating and binding books.
"Little Journeys to the Homes of the Great, Vol. 1 of 14" by Elbert Hubbard
We are to have an illumination and ringing of bells.
"Lippincott's Magazine of Popular Literature and Science, Vol. 15, No. 87, March, 1875" by Various
Every shed was as big as an ordinary railway station, its arched opening framed with electric illuminations.
"The Great Prince Shan" by E. Phillips Oppenheim
The illumination was but momentary, however.
"The Rules of the Game" by Stewart Edward White

In poetry:

Darkness covers the world,
But the Idea illuminates and shines;
With its white brightness it floods
The dark blues of the night.
"Luna" by Victor Marie Hugo
It illumines the page of the student
As his soul warms by its fire,
And stirs him to greater action,
And lifts aspirations higher.
"The Desirable Undefined" by Jared Barhite
Seeing axe and spear-head crimson,
Hope illumined doubt and dread,
And our land's despairing children
Called upon the mighty dead.
"Ugonde's Tale" by John Douglas Sutherland Campbell
A loveliness not born of art,
But growing outwards from her heart,
Illuminating all her face,
And filling all her form with grace.
"At a High Ceremony" by Robert Fuller Murray
O Christ, Who art the Light and Day,
Thou drivest darksome night away!
We know Thee as the Light of light
Illuminating mortal sight.
"O Christ, Who Art the Light and Day" by Augusta Treverorum
"This the outer throng could witness,
As the flames enwound the dwelling,
Like a glory they illumined
Awfully the martyred daughter.
"Fra Pedro" by Emma Lazarus

In news:

House-made condiments embellished with house-made condiments illuminate a kitchen with drive and ambition.
Illuminating the Confluence of Creativity and Life Experience in Writing.
Strong acting illuminates shattering 1950s drama.
Moments after the San Antonio River Walk is illuminated with thousands of Christmas lights, the festive 2012 Holiday Parade barges will roll down the river.
Visitors watch an ornate merry-go-round at the illuminated Striezelmarkt Christmas market in Dresden , Germany.
Fluorescent proteins illuminate the neurons that sense touch, temperature, and pain in a live larval zebra fish.
Black Rep's ' Insidious ' is both illuminating and mysterious.
But what struck me about Turner and her portrayal of Ivins was how illuminating and funny irreverence can be, if it is sharp, but not nasty, and how much it is under-valued in our current politics.
In this photo provided by the National Park Service, the Statue of Liberty is illuminated for the first time since it was damaged by Superstorm Sandy, Friday evening, Nov 9, 2012.
NEW YORK — The Statue of Liberty was illuminated Friday evening for the first time since it was closed due to damage on Liberty Island caused by Superstorm Sandy.
L), will license Color Kinetics' full patent portfolio to support its LED application initiatives in the architectural, entertainment and general illumination markets.
Videos illuminate the paradoxical lives of today's Polish jews.
Illuminated Mounties light the landscape at the Winter Festival of Lights in Niagara Falls, Ontario.
The Benghazi fiasco is a brutally illuminating portrait of the Obama White House in crisis mode.
Exhibitors of the Google company work on laptop computers in front of an illuminated sign of the Google logo at the industrial fair Hannover Messe in Hanover, Germany, in this April 17, 2007 file photo.

In science:

Figure 3 shows a comparison between the simulated illumination of a single channel of the SLD detector and the new U-shaped prototype.
Compton Cherenkov Detector Development for ILC Polarimetry
Figure 3: Simulation of the illumination (light intensity) in a single channel for (a) the SLD Cherenkov detector and (b) the new prototype.
Compton Cherenkov Detector Development for ILC Polarimetry
Figure 4: (a) Illumination scan of a testbox channel with 10,000 e− per shot. (b,c) Asymmetries calculated from the light intensity on the photocathode for different scans: Ax+x− for fixed z position and Az+z− for fixed x position.
Compton Cherenkov Detector Development for ILC Polarimetry
Apparently a new approach is needed to illuminate the "dark era" of prompt optical observations.
Prompt optical observations of GRBs with "Pi of the Sky" system
Some illuminating examples can be found in [Cou94, Cou97], which can be considered as being essentially the only papers treating this question.
On the Belyi degree(s) of a curve defined over a number field