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meniscus

Definitions

  • WordNet 3.6
    • n meniscus (physics) the curved upper surface of a nonturbulent liquid in a vertical tube
    • n meniscus (optics) a lens that is concave on one side and convex on the other
    • n meniscus (anatomy) a disk of cartilage that serves as a cushion between the ends of bones that meet at a joint
    • ***
Webster's Revised Unabridged Dictionary
    • Meniscus A crescent.
    • Meniscus (Opt) A lens convex on one side and concave on the other.
    • Meniscus (Anat) An interarticular synovial cartilage or membrane; esp., one of the intervertebral synovial disks in some parts of the vertebral column of birds.
    • ***
Century Dictionary and Cyclopedia
    • n meniscus A crescent or crescentshaped body. Specifically
    • n meniscus A lens, convex on one side and concave on the other, and thicker in the center, so that its section presents the appearance of the moon in its first quarter. As the convexity exceeds the concavity, a meniscus may be regarded as a convex lens (also called a converging meniscus); the corresponding form in which the convexity is less than the concavity is sometimes but improperly called a diverging meniscus. See cut under lens.
    • n meniscus The convex or concave surface of a liquid, caused by capillarity: thus, the mercury in a barometer has a convex meniscus, but spirit or water a concave meniscus.
    • n meniscus In anatomy, an interarticular fibrocartilage, of a rounded, oval, disklike, or falcate shape, situated between the ends of bones, in the interior of joints, attached by the margins. Such cartilages are found in man in the tem-poromaxillary, the sternoclavicular, and sometimes the acromioclavicular articulations, and in the wrist- and knee-joints.
    • n meniscus In zoology, a peculiar organ, of doubtful function, found in Echinorhynchus, a genus of acanthocephalous parasitic worms.
    • ***
Chambers's Twentieth Century Dictionary
    • n Meniscus mē-nis′kus a crescent or a new moon: a lens hollow on one side and bulging on the other
    • ***

Etymology

Webster's Revised Unabridged Dictionary
NL., from Gr. mhni`skos, dim. of mh`nh the moon
Chambers's Twentieth Century Dictionary
Gr. mēnē, the moon, -iskos, small.

Usage

In literature:

The tip of the burette is allowed to fill before the readings are made, which are from the lowest point or meniscus.
"Human Foods and Their Nutritive Value" by Harry Snyder
The liquid is then adjusted until its meniscus rests at the zero point on the left.
"Steam, Its Generation and Use" by Babcock & Wilcox Co.
There is no part of the island so thickly inhabited as this flat meniscus.
"The Cruise of the Betsey" by Hugh Miller
The tendon of the popliteus muscle intervenes between the lateral meniscus and the capsule.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition." by Alexander Miles
The pendulum marks and breaks the primary circuit by carrying a small platinum wire through a small mercury meniscus.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3" by Various
Lens, regular, meniscus achromatic, 3-inch focus.
"Kodaks and Kodak Supplies, 1914" by Canadian Kodak Company
A correction must be introduced for the error caused by the meniscus of the mercury.
"The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame" by W. A. Shenstone
Spherical aberration, however, may be entirely destroyed by combining a meniscus and double convex lens, as shown in Fig.
"Wireless Transmission of Photographs" by Marcus J. Martin
The height of the meniscus is then read on a millimetre scale attached to the capillary.
"The Phase Rule and Its Applications" by Alexander Findlay
In order to obtain an accurate result, the meniscus should be removed.
"The Book of Cheese" by Charles Thom and Walter Warner Fisk
Sometimes, as in the Ornithorhynchus, the meniscus is absent.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 5" by Various
***

In poetry:

Over the fisher Pelagon Meniscus his father set
The oar worn by the wave, the trap, and the fishing net;--
For all men, and for ever, memorials there to be
Of the luckless life of the fisher, the labourer of the sea.
"The Fisherman's Tomb" by Sappho

In news:

MRI shows meniscus tear in right knee.
He has a tear in the lateral meniscus of his right knee, and will require surgery.
Roy, McMillan and Camby on Roy's meniscus tear.
Video of Brandon Roy addressing the media yesterday to discuss the meniscus tear in his right knee, along with reaction from coach Nate McMillan and Marcus Camby.
Brandon Roy could miss the NBA playoffs with a meniscus tear in his knee.
If it were necessary (and it isn't), jlee78 has offered to donate his meniscus to Roy so he could play.
Brandon Roy out vs Thunder, has torn meniscus .
Francona fears torn meniscus .
Catcher Moore has torn meniscus, will need surgery.
Patients occasionally enter the office with a torn meniscus of the knee.
But when a torn meniscus in her knee forced her into a yearlong hiatus last May, she wouldn't go near the New York City runners' Mecca.
Four years ago, when LaDanian Tomlinson and Antonio Gates could have carried the team, Rivers played in the AFC Championship game with a torn meniscus and ACL in his knee.
Middleweight champion Sergio Martinez was feeling chipper and looking forward to his next title defense on Tuesday, one day after he underwent arthroscopic surgery to repair a partially torn meniscus in his right knee.
A source close to Iman Shumpert says that the rookie will undergo surgery to repair a torn left ACL and lateral meniscus.
New York Knicks rookie Iman Shumpert suffered a torn left ACL and lateral meniscus, an MRI revealed on Saturday.
***

In science:

However, it was noted experimentally that the interface profile at the critical speed corresponds to a static meniscus with zero equilibrium contact angle, except in the immediate neighborhood of the contact line.
Hydrodynamic theory of de-wetting
To prevent this, a solvent trap has been placed around the free fluid meniscus.
Linear Stability Analysis for Plane-Poiseuille Flow of an Elastoviscoplastic fluid with internal microstructure
After each experimental run we have carefully checked (by visual inspection) that no significant changes in the shape of the meniscus occurred, and thus concluded that evaporation effects were either minimal or absent.
Linear Stability Analysis for Plane-Poiseuille Flow of an Elastoviscoplastic fluid with internal microstructure
These consist of a meniscus corrector lens, spherical mirror, and a field-flattening lens (field lens) in front of the detector as shown in Figure 6.
A New High Contrast Imaging Program at Palomar Observatory
The meniscus corrector lens has two surfaces with slightly different radii of curvature (216.82 and 227.90 mm), and was cored out of a larger (240 mm diameter) parent lens, 80 mm off-axis.
A New High Contrast Imaging Program at Palomar Observatory
As explained below, the more the cylinder is inclined, the greater the deformation of the meniscus and the greater the force exerted by the meniscus on the cylinder.
Deformation of a free interface pierced by a tilted cylinder
The force exerted on a static glass rod by a meniscus, with a contact angle equal to 90◦, is zero.
Deformation of a free interface pierced by a tilted cylinder
As reported elsewhere, this situation is stable and the meniscus forms an equilibrium shape which is recorded by a digital camera (Fig. 1b).
Deformation of a free interface pierced by a tilted cylinder
Side views of the meniscus were used to investigate experimentally the effect of R, θi and V on the meniscus shape and perform measurements of ∆z ′ .
Deformation of a free interface pierced by a tilted cylinder
Thus, the capillary pressure of a meniscus starts at zero when the meniscus enters the tube and increases towards a maximum value at the middle of the tube where the tube is most narrow, before the capillary pressure decreases to zero again when the meniscus leave the tube.
A Numerical Study of Capillary and Viscous Drainage in Porous Media
We are also able to study in detail the capillary pressure of each meniscus along the front as it moves through the network.
A Numerical Study of Capillary and Viscous Drainage in Porous Media
A meniscus is located in the tubes where nonwetting and wetting fluids meet.
A Numerical Study of Capillary and Viscous Drainage in Porous Media
Therefore, we let the capillary pressure depend on where the meniscus is situated in the tube.
A Numerical Study of Capillary and Viscous Drainage in Porous Media
In the above relation x denotes the position of the meniscus in the tube (0 ≤ x ≤ d), giving that pc = 0 at the entrance and at the exit of the tube and reaches a maximum of 4γ /r in the middle of the tube (x = d/2).
A Numerical Study of Capillary and Viscous Drainage in Porous Media
Having found the qij ’s, we define a time step ∆t such that every meniscus is allowed to travel at most a maximum step length ∆xmax during that time step.
A Numerical Study of Capillary and Viscous Drainage in Porous Media
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