pigment

Definitions

  • WordNet 3.6
    • v pigment color or dye with a pigment "pigment a photograph"
    • v pigment acquire pigment; become colored or imbued
    • n pigment a substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid); dries to form a hard coating "artists use `paint' and `pigment' interchangeably"
    • n pigment dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
    • n pigment any substance whose presence in plant or animal tissues produces a characteristic color
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: The reason why hair turns gray as we age is because the pigment cells in the hair follicle start to die, which is responsible for producing "melanin" which gives the hair colour
    • Pigment Any material from which a dye, a paint, or the like, may be prepared; particularly, the refined and purified coloring matter ready for mixing with an appropriate vehicle.
    • Pigment (Physiol) Any one of the colored substances found in animal and vegetable tissues and fluids, as bilirubin, urobilin, chlorophyll, etc.
    • Pigment Wine flavored with species and honey.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: The reason why flamingos are pink is because they eat shrimp which have a red pigment
    • n pigment Any substance that is or can be used by painters to impart color to bodies; technically, a dry substance, usually in the form of a powder or in lumps so lightly held together as to be easily pulverized, which after it has been mixed with a liquid medium can be applied by painters to surfaces to be colored. Pigment is properly restricted to the dry coloring matter which when mixed with a vehicle becomes a. paint; but the two words are commonly used without discrimination. (See paint.) In oil-painting, the pigments are ground or triturated to render them smooth, usually in poppy- or nut-oil, since these dry best and do not deaden the colors.
    • n pigment In biology, organic coloring matter; any organized substance whose presence in the tissues of animals and plants colors them. Pigment is the generic or indifferent term, most kinds of pigment having specific names. Coloring matter of one kind or another is almost universal in animals and plants, comparatively few of which are colorless. Pigments are very generally distributed in the integument and its appendages, as the skin, and especially the fur, feathers, scales, etc., of animals, and the leaves and other soft parts of plants. The dark color of the negro's skin is due to the abundance of pigment in the epidermis. The black appearance of the pupil of the eye is due to the heavy pigmentation of the choroid, and various colors of the iris depend upon specific pigments. Such coloring matters are often collected in special sacs which open and shut, producing the “shot” or play of color of the chameleon, dolphin, cuttlefish, and other animals. In many low animals and plants the color of the pigment is characteristic of genera, families, or even higher groups, as among infusorians, algals, etc. See cut under cell.
    • n pigment Highly spiced wine sweetened with honey; piment.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: Humans are the only primates that don't have pigment in the palms oftheir hands.
    • n Pigment pig′ment paint: any substance used for colouring: that which gives colour to animal and vegetable tissues
    • ***

Quotations

  • Walter Benjamin
    Walter%20Benjamin
    “Separation penetrates the disappearing person like a pigment and steeps him in gentle radiance.”
  • Djuna Barnes
    Djuna Barnes
    “Dreams have only the pigmentation of fact.”

Etymology

Webster's Revised Unabridged Dictionary
L. pigmentum, fr. the root of pingere, to paint: cf. F. pigment,. See Paint, and cf. Pimento Orpiment
Chambers's Twentieth Century Dictionary
L. pigmentumpingĕre, to paint.

Usage

In literature:

He was really pigmented.
"The Blue Germ" by Martin Swayne
Note the effect of acids and alkalies respectively upon the pigmented cultivation, or upon solutions of the pigment.
"The Elements of Bacteriological Technique" by John William Henry Eyre
In the light, it forms a yellow pigment.
"Outlines of Dairy Bacteriology, 8th edition" by H. L. Russell
That ineffable hue is not a matter of pigment alone; it can only be painted upon a surface fine enough.
"Child and Country" by Will Levington Comfort
Use oil colors and apply as little pigment as may be used for the effect.
"Taxidermy" by Leon Luther Pray
And nearly in the middle was the bulky, immaculate, pigmented Ribiera.
"Astounding Stories of Super-Science, August 1930" by Various
The latter is the rete mucosum, whose cells contain the pigment which gives color to the skin.
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
The intensity of the dorsal pigmentation is subject to rather rapid change.
"A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico" by William E. Duellman
First, he was plentifully smeared on the forehead, face, and body with a sort of red-and-white clay pigment.
"Adventures in Swaziland" by Owen Rowe O'Neil
But how can we distinguish between pigments which to the eye are apparently the same?
"Colour Measurement and Mixture" by W. de W. Abney
The pigments used were transparent, and applied on paper.
"English Painters" by Harry John Wilmot-Buxton
But the pigment was now only powdered atoms, which a feather would sweep away.
"A Breeze from the Woods, 2nd Ed." by William Chauncey Bartlett
With makeshift pigments and brittle whitebark, Paul had recently painted such a group.
"West Of The Sun" by Edgar Pangborn
Well, sunshine costs less, yet is finer pigment.
"Character and Conduct" by Various
Afterwards, it was merely a matter of pigment and paints.
"The Imitator" by Percival Pollard
Yet certain pigments may, for our purpose, be regarded as representing pure colours.
"Principles of Decorative Design" by Christopher Dresser
The pigmented young one is from the same albino mother by a normal pigmented father.
"Being Well-Born" by Michael F. Guyer
Ferric oxide is employed as a pigment, as jeweller's rouge, and for polishing metals.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 7" by Various
Reynolds devoted much time and attention to finding out durable pigments.
"Highways and Byways in London" by E. T. Cook
This was not because the older painters were without the necessary pigments.
"Modern Painting, Its Tendency and Meaning" by Willard Huntington Wright
***

In poetry:

The canvas I would paint you on
Should be a bit of heaven;
My brush, a sunbeam; pigments, dawn
And night and starry even.
"Her Portrait" by Madison Julius Cawein
Colored to dull the pigment
Of azaleas, yet burnt out
Quick as they. To follow the light's tint
And intensity by midnight
By noon and throughout the brunt
"Child's Park Stones" by Sylvia Plath
Ah, what artist on earth with a model like this,
Holding not on his palette the tint of a kiss,
Nor a pigment to hint of the hue of her hair
Nor the gold of her smile-- O what artist could dare
To expect a result half so fair?
"A Discouraging Model" by James Whitcomb Riley

In news:

Nail Pigment Changes That Should Undergo Biopsy.
PPG Industries has formed a "technical collaboration" with a Canadian mining co mpany to produce a new titanium dioxide pigment for paints and coatings.
They are available coated or uncoated in various colors and loaded with various actives or pigments .
Synthetic Mica Pigments for Color Cosmetics.
Color Changing Effect Pigments .
Skin 'Sees' UV Light, Starts Producing Pigment .
In pigment precipitate filtration, the slurry is 10% solids (solids per batch is 700 kgs) having primary particles of 1 micron.
Tronox Slows Pigment Output After Cost Gain, Price Drop.
This company’s Pigments division recently introduced its ALTIRIS®.
A pigment of your imagination.
Are you in the market for a versatile high-quality pigment printer but your budget is a factor.
Eyes, unlike skin and hair, do not synthesize color pigment continuously.
Researchers at Massachusetts General Hospital found that those with a reddish-yellow pigment to their hair were at an increased risk for the skin cancer melanoma even if they protect themselves from the sun.
PRODUCTS & TECHNOLOGY: 'Whiter White' Mica Pigment.
DIY Theatre was awarded a US Patent for the non-interference pigment technology we have introduced for digital and high definition front projection.
***

In science:

The quantum phase factors allow us to consider the space structure of the pigments.
Complex quantum network model of energy transfer in photosynthetic complexes
There exist some optimal phase regions where the transfer efficiency takes its maxima, which indicates that when the pigments are optimally spaced, the exciton can pass through the FMO with perfect efficiency.
Complex quantum network model of energy transfer in photosynthetic complexes
However, all these models cannot describe the space distribution of the pigments.
Complex quantum network model of energy transfer in photosynthetic complexes
As we know, the space distribution of the pigments is very important for exciton energy transfer and the experimental evidence also shows that the optimized space distribution of the pigments is one factor for prefect energy transfer in light-harvesting complexes [2, 3].
Complex quantum network model of energy transfer in photosynthetic complexes
Therefore, it is necessary to set up a quantum model in which the space distribution of the pigments is considered.
Complex quantum network model of energy transfer in photosynthetic complexes
As for FMO, the phases are related to the length of the pigments as well as the intrinsic features of the barriers between the adjacent pigments.
Complex quantum network model of energy transfer in photosynthetic complexes
The FMO is a trimer made of three identical subunits, each containing seven pigments.
Complex quantum network model of energy transfer in photosynthetic complexes
The subunit containing seven pigments shown in Fig. 6(a) can be modeled as a network of seven sites with site dependent coupling and site energies.
Complex quantum network model of energy transfer in photosynthetic complexes
The initial state for our simulation is a superposition state localized at pigments 1 and 6 which are close to the chlorosome antenna (donor).
Complex quantum network model of energy transfer in photosynthetic complexes
Pigment 3 is the main excitation donor to the reaction center.
Complex quantum network model of energy transfer in photosynthetic complexes
The phases denote the distance between the pigments and the barriers between pigments, which are determined actually by the spatial distribution of seven pigments.
Complex quantum network model of energy transfer in photosynthetic complexes
When the pigments are optimally spaced, the exciton can pass through FMO with optimal efficiency.
Complex quantum network model of energy transfer in photosynthetic complexes
The role of the phase coherence is to overcome local energetic traps and aid efficient trapping exciton energy by the pigments facing the reaction center.
Complex quantum network model of energy transfer in photosynthetic complexes
The experimental evidences [2, 3] show that besides the optimal space distribution of the pigments, the multiple energy delivery pathway is another acceptable contributing factor for perfect energy transfer.
Complex quantum network model of energy transfer in photosynthetic complexes
The phase describes the length of the pigments, the distance, and the barriers between pigments and is then determined by the space distribution of the pigments.
Complex quantum network model of energy transfer in photosynthetic complexes
***