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but·ton

(bŭt'ŏn),
A knob-shaped structure, lesion, or device.
[M.E., fr. O.Fr. bouton, fr. bouter, to thrust, fr. Germanic]

button

/but·ton/ (but´'n)
1. a knoblike elevation or structure.
2. a spool- or disk-shaped device used in surgery for construction of intestinal anastomosis.

Jaboulay button  a device used for lateral intestinal anastomosis.
mescal buttons  transverse slices of the flowering heads of a Mexican cactus, Lophophora williamsii, whose major active principle is mescaline.
Murphy's button  a metallic device used for connecting the ends of a divided intestine.
skin button  a connector or stretch of tubing covered with a velour fabric, designed to encourage tissue ingrowth where it passes through the skin.

button

[but′ən]
Etymology: OFr, boton
1 a knoblike elevation or structure.
2 a small appliance shaped like a spool or disk, used in surgery for construction of an intestinal anastomosis.

button

Drug slang
A regional term for mescaline.

Radiation safety
A hockey puck-like mass of plutonium nitrate which is a starting material for bomb-grade plutonium.
 
Transfusion medicine
An aggregate of red blood cells (RBCs) adherent to the bottom of a test tube after centrifugation; if with gentle shaking of the test tube the cells remain adherent, agglutination is assumed to have occurred, implying presence of both an antigen (on the RBCs) and a specific antibody (immunoglobulins) in the serum button.
 
Vox populi
See Panic button.

but·ton

(bŭt'ŏn)
A structure, lesion, or deviceof knob shape.
[M.E., fr. O.Fr. bouton, fr.bouter, to thrust, fr. Germanic]

button 

The preformed piece of glass which will become the segment of a fused bifocal or multifocal lens. It is ground and polished on one side to the appropriate curvature for fusing to the main lens (British Standard). See bifocal lens.

but·ton

(bŭt'ŏn)
A structure, lesion, or device of knob shape.
[M.E., fr. O.Fr. bouton, fr. bouter, to thrust, fr. Germanic]

button,

n the excess metal remaining from the casting and sprue; located at the end of the sprue, opposite the casting.
button, implant,

button

1. a knoblike elevation or structure.
2. an appliance used in surgical anastomosis of the intestine (Murphy's button).

button tumor
button ulcer
craterous mucosal defects, the edges of which are raised above the surrounding mucosa. The original necrotic center of the lesion is shed leaving a deep ulcer. They are characteristic lesions in the cecum and colon of pigs with subacute salmonellosis. The lesions are usually few in number, small and deep.
References in periodicals archive ?
SITTING on a South West train last week (a journey that should have taken 15 minutes took two hours) I noticed all the men in the carriage were feverishly pressing buttons on their mobile phones.
Sophisticated shopping has been abandoned in favour of interactive entertainment, with children pressing buttons to make animated characters spring to life.
Games will be played by moving the phone up, down, right or left, instead of pressing buttons.
The only event that's the slightest bit interesting is the speed skating where, by pressing buttons sequentially, you build up that rhythmic arm-swinging that makes those guys look so silly (that, and those funky skin-tight suits).
Smart Solutions recently released its pharmacy IVR system incorporating Fonix ASR, which allows pharmacy customers to access prescription information via an easy-to-use voice interface, a simple solution that doesn't require pressing buttons or looking at the phone.
You can perform actions by either pressing buttons or by tapping and dragging objects with your stylus.
0 SE for mobile and embedded devices gives users an easy, safe way to access information and operate device functions without pressing buttons, scrolling through menus, looking at screens or typing.
By pressing buttons on the side of the earpiece, the user can handle calls without having to touch their mobile phone.
In addition, the NeverWire 14 offers built-in diagnostics and security functions that users can implement by simply pressing buttons on the top of the box.