• WordNet 3.6
    • n protrusion the act of projecting out from something
    • n protrusion something that bulges out or is protuberant or projects from its surroundings "the gun in his pocket made an obvious bulge","the hump of a camel","he stood on the rocky prominence","the occipital protuberance was well developed","the bony excrescence between its horns"
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Webster's Revised Unabridged Dictionary
    • Protrusion The act of protruding or thrusting forward, or beyond the usual limit.
    • Protrusion The state of being protruded, or thrust forward.
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Century Dictionary and Cyclopedia
    • n protrusion The act of protruding or thrusting forth, or the state of being protruded.
    • n protrusion That which stands out beyond something adjacent; that which protrudes or projects.
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Chambers's Twentieth Century Dictionary
    • n Protrusion the act of thrusting forward or beyond the usual limit: the state of being protruded: that which protrudes
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Chambers's Twentieth Century Dictionary
L. protrudĕrepro, forward, trudĕre, to thrust.


In literature:

There was no protrusion of the tongue.
"She Stands Accused" by Victor MacClure
Brown speaks of protrusion of the membranes from the vulva several weeks before confinement.
"Anomalies and Curiosities of Medicine" by George M. Gould
There is, however, some tendency to the protrusion of the lips with the adults of all races under the influence of great rage.
"The Expression of Emotion in Man and Animals" by Charles Darwin
Presently she was aware of a protrusion from the window beneath hers.
"Zuleika Dobson" by Max Beerbohm
Perhaps I have blundered about Primula; but certainly not about mere protrusion of pollen-tubes.
"More Letters of Charles Darwin Volume II" by Charles Darwin
Andrews recognized the irregular face full of red knobs and protrusions.
"Three Soldiers" by John Dos Passos
This is used in the treatment of protrusion of the navel in children.
"Enquire Within Upon Everything" by Anonymous
The nose was unduly protrusive, while the chin and the forehead retreated.
"Patriarchal Palestine" by Archibald Henry Sayce
It will then contract or expand its shape by alternate protrusions and retractions of parts of its substance.
"Young Folks' Library, Volume XI (of 20)" by Various
Much may be learned from the appearance, color, and form of the tongue, and the manner of its protrusion.
"The People's Common Sense Medical Adviser in Plain English" by R. V. Pierce
A protrusion of the rectum all the way from two to four inches.
"The Veterinarian" by Chas. J. Korinek
The protrusible tongue, ending in a sticky club, can be shot out for about seven inches in the common chameleon.
"The Outline of Science, Vol. 1 (of 4)" by J. Arthur Thomson
Somewhat more of the flat, wide protrusion from the sea became thus visible to both.
"As It Was in the Beginning" by Philip Verrill Mighels
Intercoxal process: in Coleopteran; a median protrusion of the basal segment of abdomen between the hind coxae.
"Explanation of Terms Used in Entomology" by John. B. Smith
"Cattle and Their Diseases" by Robert Jennings
The walls were rough, with many niches and protrusions.
"Frank Merriwell's Pursuit" by Burt L. Standish
Elongation and protrusion of the placenta have been already alluded to at p. 119, and also at p. 125.
"Vegetable Teratology" by Maxwell T. Masters
Here and there ledges ran along the faces of the cliffs and eerie protrusions jutted out from the corners.
"Roosevelt in the Bad Lands" by Hermann Hagedorn
The valleys represent the subsidences of the crust; the domes are the corresponding protrusions resulting from these subsidences.
"The Atlantic Monthly, Volume 11, No. 68, June, 1863" by Various
His jaws were small with a protrusion of the lower.
"Degeneracy" by Eugene S. Talbot

In poetry:

A lustreless protrusive eye
Stares from the protozoic slime
At a perspective of Canaletto.
The smoky candle end of time
"Burbank With A Baedeker: Bleistein With A Cigar" by T S Eliot

In news:

Pop-up books have always been the exhibitionists of the literary world—all those creases and protrusions.
A sculptural glass protrusion is an exciting counterpoint to the otherwise rectilinear museum.
Puget Sound Naval Shipyard and Intermediate Maintenance Facility workers reached a milestone last month, successfully installing enormous protrusions to USS Nimitz .
Pop-up book s have always been the exhibitionists of the literary world—all those creases and protrusions.
Sciatica is often caused by a bone spur (an abnormal bone growth) or by a disk protrusion (a torn, bulging disk in the spine), two common conditions that can crowd the sciatic nerve.
Sam (Anastasia's little brother) is forbidden to wear his plastic fangs in the house and attempts to run away to Alaska, where the walruses will surely accept his oral protrusions.
A large protrusion greets bicyclists along the Olentangy Trail, one that would likely cause serious crashes if not marked.
Marking the ledge 's side protrusion so it will be flush with the arm rest side.
Has introduced the Insulator Dock Seal with Light-blocking Header, the most durable dock seal available and the first one with a header that effectively seals small light gaps caused by trailer protrusions, according to the company.
Reduces connector protrusion and cable strain.
1) Sharp Thinking Sharp edges, corners and protrusions wear holes through tarps in no time flat.
Can someone recommend a good Physical Therapist for mild disk protrusions.
Geometrical protrusions were sticking out of the front of the cube.

In science:

For a closeup of the horizontal protrusion, see Figure 3.4.
Packing identical simple polygons is NP-hard
The big polygon also now has inclusions and protrusions which force the location of where each row and column of the squares line up.
Packing identical simple polygons is NP-hard
Also observe that by construction, in a given small polygon, the vertical notch which the protrusion from above occupies is a graphical representation of the y coordinate of the small polygon in the grid of packed small polygons.
Packing identical simple polygons is NP-hard
This is a good first step of making a polygon “aware” of its location, however, we would like to be able to make the notch a neighboring protrusion occupies a function of the small polygon’s horizontal and vertical positions; currently the notch is a function of the horizontal or the vertical position.
Packing identical simple polygons is NP-hard
Thus, in a given small polygon, the horizontal protrusion from the left neighbor will go into a single micronotch (vertical coordinate) in a group of notches (horizontal coordinate) in a copy of the horizontal protrusion which indicates the shift difference between the given small polygon and the polygon to the left.
Packing identical simple polygons is NP-hard
Typically, a block of order q (length q + 1) has q + 1 protrusions on its top and q + 1 indentations on its bottom, so that the indentations on the bottom of one block can lock on to the protrusions on the top of another.
The bricklayer problem and the Strong Cycle Lemma
The protrusions and indentations then restrict it to q possible positions, covering a positive integer amount of each brick it rests on.
The bricklayer problem and the Strong Cycle Lemma
Mapping the unit circle with a truncated Laurent expansion defines the web, which wraps around the growing tips and exhibits a sort of turbulent dynamics, endlessly forming and smoothing cusp-like protrusions (Hastings (1997); Hastings and Levitov (1998)).
Conformal mapping methods for interfacial dynamics
The X-ray emission must come from gas heated by faster (VS ≥ 1000 km s−1 ) shocks, either transmitted shocks entering the protrusions or shocks reflected from the protrusions.
Chandra Observations of Shock Kinematics in Supernova Remnant 1987A
At each point of impact with a protrusion, a new zone of enhanced X-ray emission appears.
Chandra Observations of Shock Kinematics in Supernova Remnant 1987A
This picture assumes that only a small fraction of the blast wave area is covered by protrusions at the present time.
Chandra Observations of Shock Kinematics in Supernova Remnant 1987A
By constructing simulations of the hydrodynamics of the impact of the blast wave with the protrusions, we hope to provide a more refined interpretation of the observations than the analysis presented here.
Chandra Observations of Shock Kinematics in Supernova Remnant 1987A
We interpret that this up-turn of the soft X-ray flux is caused by the shock recently beginning to interact with the entire inner ring rather than only with small protrusions of the CSM.
Supernova Remnant 1987A: High Resolution Images and Spectrum from Chandra Observations
Similarly, in IRAM 0491 ( Lee et al., 2005) and HH 212 (Wiseman et al., 2001) the dense gas traced by N2H+ and NH3 , respectively, exhibit blue- and red-shifted protrusions extending along the blue and red outflow lobes, evidence that there are strong outflow-envelope interactio ns in these class 0 sources.
Molecular Outflows in Low- and High-Mass Star Forming Regions
Zhekov et al. (2005) argue that these lines arise in the radiative shocks propagating into the protrusions, as well as the reflected shock propagating back from these.
Coronal emission from the shocked circumstellar ring of SN 1987A