• WordNet 3.6
    • n dilatation the act of expanding an aperture "the dilation of the pupil of the eye"
    • n dilatation the state of being stretched beyond normal dimensions
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Webster's Revised Unabridged Dictionary
  • Interesting fact: Experiments conducted in Germany and at the University of Southampton in England show that even mild and incidental noises cause the pupils of the eyes to dilate. It is believed that this is why surgeons, watchmakers, and others who perform delicate manual operations are so bothered by noise. The sounds cause their pupils to change focus and blur their vision.
    • Dilatation (Anat) A dilation or enlargement of a canal or other organ.
    • Dilatation Prolixity; diffuse discourse. "What needeth greater dilatation ?"
    • Dilatation The act of dilating; expansion; an enlarging on all sides; the state of being dilated; dilation.
    • ***
Century Dictionary and Cyclopedia
    • n dilatation The act of expanding; expansion, as by heat; a spreading or enlarging in all directions; the state of being expanded or distended; distention.
    • n dilatation Specifically Diffuseness of speech; prolixity; enlargement.
    • n dilatation An abnormal enlargement of an aperture or a canal of the body, or one made for the purposes of surgical or medical treatment. See expansion.
    • n dilatation A dilated part of anything; specifically, in zoology, a dilated portion of an organ or a mark.
    • n dilatation In elasticity, change of volume under stress.
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Chambers's Twentieth Century Dictionary
    • ns Dilatation expansion
    • ***


  • Jean Baudrillard
    “Boredom is like a pitiless zooming in on the epidermis of time. Every instant is dilated and magnified like the pores of the face.”


Webster's Revised Unabridged Dictionary
OE. dilatacioun, F. dilatation, L. dilatatio, fr. dilatare,. See Dilate, and cf. 2d Dilation
Chambers's Twentieth Century Dictionary
L. dilatus (used as pa.p. of differre), from di (= dis), apart, and latus, borne.


In literature:

In the south room Rebecca stopped sewing and sat watching with dilated eyes.
"Famous Modern Ghost Stories" by Various
I see no reason why the stipulae of Rosae are not to be considered as belonging to, or dilatations of the petiole.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
The texture is looser, due to the exudate which has dilated all the spaces in the tissue.
"Disease and Its Causes" by William Thomas Councilman
It pleased him to see Helen's green eyes dilate, to see Bessy Bell shudder.
"The Day of the Beast" by Zane Grey
As the glare of the links in the street grew brighter, and ousted the sickly daylight, his form seemed to dilate.
"Count Hannibal A Romance of the Court of France" by Stanley J. Weyman
The fibres of the wood you know are dilated, but not lengthened by moisture.
"Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson" by Thomas Jefferson
As she lowered her head in the movement, the dilation of her nostrils repressed a smile of satisfaction.
"Sally Bishop" by E. Temple Thurston
Her beautiful face was a dead white; her eyes were dilated, and under them were dark semicircles.
"The Ghost" by Arnold Bennett
The pupils were dilated.
"By the Light of the Soul" by Mary E. Wilkins Freeman
Happiness dilates the blood-vessels.
"The Healthy Life, Vol. V, Nos. 24-28" by Various

In poetry:

So when one wing can make no way,
Two joined can themselves dilate,
So can two persons propogate,
When singly either would decay.
"An Ode Upon a Question Moved, Whether Love Should Continue Forever" by Lord Edward Herbert of Cherbury
Some faint and wearily should glide
Their broken flight along--
While some high in the air should ride
Dilated, bold, and strong.
"Vignette - I" by Matilda Betham
And borne aloft by the sustaining blast,
This little golden thread
Dilates into a column high and vast,
A form of fear and dread.
"By The Fireside : Sand Of The Desert In An Hour-Glass" by Henry Wadsworth Longfellow
Pale Proserpine came groping round,
Her pupils dreadfully dilated
With too much living underground,--
A residence quite overrated;
"The First Fan" by Oliver Wendell Holmes
The little hand falls from his shoulder
All nerveless, the blue eyes dilate,
A shuddering sigh, then the baby
Is waiting to open the gate.
"Opening The Gate For Papa" by Madge Morris Wagner
Her dark, dilating eyes expressed
The broad horizons of the west;
Her speech dropped prairie flowers; the gold
Of harvest wheat about her rolled.
"The Singer" by John Greenleaf Whittier

In news:

Gene mutations that cause heart muscle disease and chronic heart failure in some children and adults with dilated cardiomyopathy have been identified by researchers.
Phlebectasia is a dilation of a vein.
Introducer Needles, Dilators, and Tear Away Introducer Sheaths.
Qosina adds an entire line of Introducer Needles, Dilators, and Tear Away Introducer Sheaths with Dilators as stock, non-sterile components for device manufacturers.
Doctors may dilate the eyes and check behind the retina.
Results To address this question, we perturbed the activity of the 'pyloric' ventricular dilator neuron and the 'gastric' lateral gastric neuron during ongoing pyloric and gastric rhythms.
The cause was a genetic disorder called dilated cardiomyopathy.
Phlebectasia is a dilation of a vein.
These leading (black) lights of the Austin psych-rock scene clean up their murky production for album three, and cast their dilated gaze even further back in time.
At a later date I'll dilate on the outcome of the election.
His eyes are blue, dilated and deserted.
The web was managed with a combination of dilation and unilateral CO2 laser excision.
An active derived from lentils has been shown to target three causes of dilated pores, including: excess sebum production, the relaxation of skin tissues, and an abnormally accelerated keratinization process.
Loma Vista Medical Receives FDA Clearance for its TRUE Dilatation™ Balloon Valvuloplasty Catheter.
The products are infused with a proprietary blend of therapeutic essential oils shown to promote sleep while gently dilating nasal passages to help increase oxygen flow and decrease snoring.

In science:

In the definition of Sn , J is a multi-index which depends on the increment that we use, and m, an integer, is the number of dilations of the increment that we consider [see the Appendix and also Kent and Wood (1997)].
Estimation of fractal dimension for a class of Non-Gaussian stationary processes and fields
Classically the dilatation current is conserved; ∂µDµ = Θµ µ = 0.
String Theory and the Vacuum Structure of Confining Gauge Theories
Remark 2.4. (i) It may be observed that in the above quantum stochastic dilation {jt} of the dynamical semigroup {Tt} there is no “Poisson” term since θ4 (x) = 0 for al l x ∈ A.
Quantum random walks and their convergence
The more general case of dilation using the convergence of quantum random walks where the representation is non trivial (and therefore wil l have non zero “Poisson” component) is being investigated.
Quantum random walks and their convergence
Sahu, L. : Quantum Stochastic Dilation of a Class of Quantum Dynamical Semigroups and Quantum Random Walks, Ph. D.
Quantum random walks and their convergence