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1. to turn along an axis while moving forward along a surface.
2. the act of rolling.
3. an object that has been rolled into a cylindrical shape.
pelvic roll pelvic rotation.
trochanter roll a wedge (usually a rolled towel) placed from the crest of the ilium to midthigh to prevent external rotation of the hip when the patient is in a recumbent position.
Use of trochanter roll to prevent external rotation of hip.
See illustration.


1. A mass or structure of a rounded or cylindric form created by rotation of a layer of material around its own long axis.
2. The process by which a round entity is moved by a pressure gradient, as when leukocytes move along a blood vessel wall.


Etymology: OFr, rolle
intrinsic joint movements on an axis parallel to the articulating surface. The axis can remain stationary or move in a plane parallel to the joint surface.


(rol) [Fr. roulle, scroll fr. L. rotula, small wheel]
A usually solid, cylindrical structure.

cotton roll

A cylindrical mass of purified and sterilized cotton used as packing or absorbent material in various dental procedures.

ilial roll

A sausage-shaped mass in the left iliac fossa. It is due to a collection of feces in or induration of the walls of the sigmoid colon.

lumbar roll

An air-filled, foam, or gel cushion placed behind the lower back as a support.

Patient care

It is used to maintain the normal lordotic curvature of the lumbar spine and thereby to relieve pressure on commonly injured structures such as discs and facet joints.

scleral roll

See: spur, scleral

trochanter roll

A cushion or pillow used to hold the hip of a postoperative patient in neutral position.
See: Trochanter Roll

Patient discussion about roll

Q. What roll does the sun have in causing cancer

A. Hi again:

This is a book for everybody here:
Read it and learn to understand why you are fooled day by day!

More discussions about roll
References in periodicals archive ?
The chemistry of the new electronics and electrics is key to its future, whether it is invisible, tightly rollable, biodegradable, edible, employing the memristor logic of the human brain or possessing any other previously- impossible capability in a manufactured device.
Asked about the state's decades-long drought for such a center, Sreenivasan, a professor of mechanical engineering at UT-Austin, noted the steep competition for the grant and said that, with concepts such as rollable batteries moving closer to reality, he believed the national mood had finally shifted in a way that favors the strengths of UT-Austin's Cockrell School of Engineering.
This cable is composed of rollable optical fiber ribbon with standard 0.
In addition to traditional flat screens, OLEDs can be applied to many different substrates, making curved and even flexible or rollable screens possible.
Geraldine Nichols, from the team behind the project, said: "Everyone is invited to submit artwork that could be drawings, paintings, doodles, photos, textiles, poems - in fact, anything that is analogue and rollable.
Uniform mixing of nanoparticles in the epoxy matrix results in highly flexible and rollable thin-film (2 microns to 25 microns) RC3 capacitors.
Leto says that LexJet 5 Mil T-Flex does not curl when used in rollable applications, such as banner stands, trade-show graphics, and point-of-purchase signage.
They are also strapping themselves into rollable boots
The company, also located on the High Tech Campus, is credited with having developed the world's first rollable electronic-display, which it demonstrated at the IFA International Consumer Electronics Show in Berlin, Germany, in 2005.
Flexible" technology such as rollable plastic TV screens could soon be manufactured in the region with the creation of the Plastic Electronics Technology Centre (PETeC).
Flexible technology such as rollable plastic TV screens could soon be manufactured in the region with the creation of the Plastic Electronics Technology Centre (PETeC).