beak

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beak

(bēk),
1. The nose of pliers used in dentistry for contouring and adjusting wrought or cast metal dental appliances.
2. Sometimes used to describe a beak-shaped anatomic structure.
[L. beccus]

beak

(bēk)
n.
a. The bill of a bird, especially one that is strong and curved, such as that of a hawk or a finch.
b. A similar structure in other animals, such as turtles, insects, or fish.

beaked (bēkt) adj.

beak

1 any pointed anatomical structure, such as the beak of the sphenoid bone.
2 a pair of dental pincers used in shaping prostheses.
3 a radiographic image of a bony protuberance adjacent to a degenerative intervertebral disk.

beak

  1. (also called bill) the jaws and associated horny covering in a bird or turtle.
  2. any pointed projection in plant fruits.
  3. a projecting jawbone in fish such as pike.
  4. the tip of the UMBO in bivalve molluscs.
  5. the jaws of a CEPHALOPOD such as the octopus.

beak

(bēk)
1. Nose of pliers used in dentistry to contour and adjust wrought or cast metal dental appliances.
2. Sometimes used to describe any beak-shaped anatomic structure.
[L. beccus]

beak

the hard keratinization (or rhamphotheca) which provides the horny covering of the beak bones, plus the beak bones, of birds. The dorsal ridge of the upper beak is the culmen, the similar keel of the lower beak is the gonys. The cutting edges of the beak are the tomia. Called also bill.
Enlarge picture
Different shape of beak between species. By permission from Aspinall V, O'Reilly M, Introduction to Veterinary Anatomy and Physiology, Butterworth Heinemann, 2004

beak avulsion
traumatic separation of the upper and lower beak at the base requires hand feeding for survival of the bird. Some attempts at devising an artificial beak have been made, but attachment is a major problem.
beak fracture
occurs with trauma and requires immobilization, often with innovative procedures (see acrylic glue), without restricting food intake by the bird during recovery. Severe trauma may result in avulsion of upper or lower beak.
beak necrosis
a condition of chickens and turkeys caused by excessively fine mashed feeds.
beak overgrowth
can result from malocclusion, liver disease, lack of wear, aging, nutritional deficiency, and most commonly infestation by the mite, Cnemidocoptes pilae.
psittacine beak and feather disease
see psittacine beak and feather disease.
beak sign
the radiographic feature of contrast material extending through an elongated, concentrically narrowed pylorus indicative of hypertrophy of the sphincter.
beak trimming
in most modern poultry houses the chances of cannibalism developing are so high that beak trimming is almost a necessity, especially if the birds are to be reared in full light. Light-restricted accommodation greatly reduces the prevalence of this vice. A temporary trim is done at a few days of age but a permanent trim is necessary later. Special instruments, utilizing a hot, cutting blade cautery, are used and the operation must be done by an expert or badly deformed beaks result and the birds are unable to feed properly. Alternatives to trimming include the fitting of spectacles or pick guards but these are expensive, time-consuming to put on and not feasible for birds in cages.
References in periodicals archive ?
Los peces capturados en el cauce principal de los rios Nare y Guatape presentaron una talla media de 158.
We applied a polynomial vector extrapolation method, namely reduced rank extrapolation (RRE), to the iterative method proposed by Lin [24] which computes the minimal positive solution of NARE as the minimal positive solution of a vector equation.
Kitas labai svarbus pasiulymo del reglamento pakeitimo elementas, susijes su lis pendens taisykle, yra itraukimas teises normos 31 pasiulymo straipsnyje, kad jei civiline byla yra iskelta vienoje valstybeje nareje, o del laikinuju apsaugos priemoniu yra kreipiamasi i kitos valstybes nares teisma, tai abu teismai turi bendradarbiauti, iskaitant gavima visos reikalingos informacijos apie bylos aplinkybes, ar tikrai yra butina skubiai taikyti tokias priemones, arba kodel buvo atsisakyta laikinasias apsaugos priemones taikyti toje valstybeje nareje, kurioje yra nagrinejama byla.
The longer palpebral fissures, external nares and rima oris obtained in females in this study could be size dependent as similarly observed by (Olopade & Onwuka) in Red Sokoto goats.
Zone 1: Sampling stations were located in the Nare River drainage above the Penol-Guatape reservoir.
Valstybe nare, kurios atsinaujinanciu istekliu energijos dalis per pastaruju dveju metu laikotarpi tapo mazesne uz direktyvoje nustatyta indikatyvia trajektorija, ne veliau kaip kitu metu birzelio 30 d.
Nare said that the prisoners are given one bowl of maize meal daily, which has little if any nutritional value.
The Nare is like everyone's best-kept secret, with a massive 70 per cent return rate and families coming through the generations.
On his perspective of the game, Nare indicated that they were the deserving winners as they beat Chiefs in all areas.
Genetic variability of Brycon henni (Characiformes: Characidae) in the middle basin of Nare and Guatape rivers, Magdalena River system, Colombia.
Nare said the earlier rulingstood, even if state lawyers launched a fresh challenge.