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HEAD RING [25 records]

Record 1 2026-02-26

English

Subject field(s)
  • Couplings (Mechanical Components)
  • Small Arms
DEF

A sharp-edged ring mounted on the piston head of a gas-operated firearm that makes a close seal between the piston and the gas cylinder wall.

OBS

The piston ring reduces the accumulation of carbon in the cylinder.

OBS

piston ring: designation and definition officially approved by the Army Terminology Panel.

French

Domaine(s)
  • Accouplements (Composants mécaniques)
  • Armes légères
DEF

Bague à bords acérés encerclant la tête du piston d'une arme à feu à emprunt de gaz et assurant l'étanchéité entre le piston et la paroi du cylindre à gaz.

OBS

Le segment de piston réduit l'accumulation de carbone dans le cylindre à gaz.

OBS

segment de piston : désignation et définition uniformisées par le Groupe d'experts en terminologie de l'Armée de terre; désignation uniformisée par le Groupe de travail de terminologie des armes légères.

Spanish

Save record 1

Record 2 2025-07-15

English

Subject field(s)
  • Metal Fasteners
CONT

Flange screws have an integrated flange(a wide, flat ring) under the head, which provides a larger bearing surface. This design distributes load and prevents the screw from pulling through thin materials like sheet metal or plastic.

French

Domaine(s)
  • Clouterie et visserie
DEF

Vis dotée d'une partie élargie en forme de rondelle sous sa tête.

Spanish

Save record 2

Record 3 2017-05-12

English

Subject field(s)
  • Joining Elements (Mechanical Components)
  • Aeronautical Engineering and Maintenance
DEF

A bolt having a ring or loop instead of an ordinary head for lifting purposes or for the attachment of another part.

OBS

eye bolt: term standardized by ISO.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
  • Aérotechnique et maintenance
OBS

boulon : Cheville de métal terminée à l'une de ses extrémités par une tête (ronde, carrée ou à pans) et à l'autre par un pas de vis destiné à recevoir un écrou ou par un trou dans lequel on peut passer une clavette.

OBS

corps de boulon à oeil : terme normalisé par l'ISO.

OBS

boulon à œil : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.

Spanish

Save record 3

Record 4 2017-05-09

English

Subject field(s)
  • Wrought Metal Items and Antique Tools
  • Forestry Operations
CONT

dog : A short, heavy piece of steel, acutely bent, pointed at one end(for driving into timber) and having a ring or eye at the other to take e. g. a butt hook or a chain(chain dog)... Among variants is the dragging pin(=skidding dog [Canada]), whose head is a hook to take a chain drag line.

French

Domaine(s)
  • Objets ouvrés et outils anciens (Métal)
  • Exploitation forestière
OBS

clameau : Pièce d'acier, courte et lourde, recourbée, ayant une extrémité pointue (qui permet de l'enfoncer dans le bois) et comportant un anneau ou œil à l'autre extrémité, auquel peut s'adapter un crochet de culée ou une chaîne (en anglais chain dog) [...] parmi les différents modèles on trouve le (dragging pin) dont la tête est un crochet où s'accroche le câble porteur [...]

Spanish

Save record 4

Record 5 2017-05-09

English

Subject field(s)
  • Wrought Metal Items and Antique Tools
  • Forestry Operations
CONT

dog : A short, heavy piece of steel, acutely bent, pointed at one end(for driving into timber) and having a ring or eye at the other to take e. g. a butt hook or a chain(chain dog)... Among variants is the dragging pin(=skidding dog [Canada]), whose head is a hook to take a chain drag line.

French

Domaine(s)
  • Objets ouvrés et outils anciens (Métal)
  • Exploitation forestière
OBS

clameau : Pièce d'acier, courte et lourde, recourbée, ayant une extrémité pointue (qui permet de l'enfoncer dans le bois) et comportant un anneau ou œil à l'autre extrémité, auquel peut s'adapter un crochet de culée ou une chaîne (en anglais chain dog).

Spanish

Save record 5

Record 6 2017-01-25

English

Subject field(s)
  • Bearings and Bearing Systems (Mechanical Components)
DEF

A stud-shaped element, the head of which is spherical and adapted for use in place of the inner ring of a spherical plain bearing.

OBS

ball stud: term and definition standardized by ISO.

OBS

ball stud: term officially approved by the Lexicon Project Committee (New Brunswick).

French

Domaine(s)
  • Paliers, coussinets et roulements (Composants mécaniques)
DEF

Élément en forme d'axe dont une extrémité est sphérique afin d'être utilisée à la place de la bague intérieure d'une rotule lisse.

OBS

pivot à rotule : terme et définition normalisés par l'ISO.

OBS

pivot à rotule : terme uniformisé par le Comité du projet de lexiques (Nouveau-Brunswick).

Spanish

Save record 6

Record 7 2014-01-08

English

Subject field(s)
  • Continuous Handling
  • Hoisting and Lifting
  • General Scientific and Technical Vocabulary
OBS

Steel ring at head of stem to accommodate head ropes or tow ropes.

French

Domaine(s)
  • Manutention continue
  • Levage
  • Vocabulaire technique et scientifique général
CONT

De gros anneaux [...] sont fixés dans le plancher pour le saisissage ou arrimage [...] des machines.

Spanish

Save record 7

Record 8 2013-05-03

English

Subject field(s)
  • Diesel Motors
CONT

Before the cylinder head contacts the crankcase, recheck the position of the seat ring notch and lower the assembly into final position.

French

Domaine(s)
  • Moteurs diesel

Spanish

Save record 8

Record 9 2006-12-18

English

Subject field(s)
  • Sports Equipment and Accessories
  • Horse Racing and Equestrian Sports
  • Horse Husbandry
CONT

The head rope should be fitted by passing the end through the bottom ring of the jowl piece from the off side, then through the ring of the head rope and over the horse's neck from the near side The head rope is then secured by four complete coils and two half coils, and adjusted so that the front of the coil is a span of the hand from the bottom ring of the jowl piece.

Key term(s)
  • headrope

French

Domaine(s)
  • Équipement et accessoires de sport
  • Courses hippiques et sports équestres
  • Élevage des chevaux

Spanish

Save record 9

Record 10 2005-09-13

English

Subject field(s)
  • Horse Husbandry
  • Horse Racing and Equestrian Sports
DEF

Leather or nylon headgear, with attachments for side reins and lunge line, worn by the horse when it is being lunged.

CONT

A cavesson resembles a heavy, well fitting halter and is the preferred headpiece for longeing (lungeing) English horses. "Breaking" cavessons are generally made of stout leather with heavy metal nosepieces and have straps to fasten them securely and keep them in position because during "breaking" it is often necessary to tug or pull quite hard on the line to control the horse. Lighter, simpler cavessons are also available for the very young horse, the already-trained horse, for use with a bit or bridle, and for use as a dropped noseband.

OBS

The traditional cavesson is made from leather but nylon cavessons are also available. A longeing(lungeing) cavesson has a padded noseband with a jointed metal nosepiece that usually has 3 swivel-mounted rings attached to it. Generally the middle ring is used for longeing(lungeing) unless a horse carries his head to the outside of the circle extremely. In that case, the inside cavesson ring can be used to bend the horse inward on the longeing(lungeing) circle. The side rings are also used for side rein attachment or long line attachment.

CONT

Stubben 1085 Crank Caveson Bridle ... Stubben’s crank caveson comes with a single roller buckle which tightens the chinstrip from both sides, providing equal pressure all around.

French

Domaine(s)
  • Élevage des chevaux
  • Courses hippiques et sports équestres
DEF

Licol renforcé à l'avant, sur le dessus duquel on attache la longe.

Spanish

Campo(s) temático(s)
  • Cría de ganado caballar
  • Carreras de caballos y deportes ecuestres
PHR

Cabezón de trabajo a cuerda.

Save record 10

Record 11 2003-11-12

English

Subject field(s)
  • Meteorology
DEF

A diffuse white ring surrounding the shadow cast by an observer's head upon dew-covered ground when the solar elevation is low and the distance from observer to shadow is large.

CONT

It is most apparent when the sun is low in the sky and when the surface is dew-covered. The explanation of the heiligenschein varies depending upon whether it is seen over a dry or a dew-covered surface. When an observer’s shadow is cast on a dry, irregular surface (such as gravel or vegetation), each irregularity near the antisolar point covers its own shadow. In other directions, the average brightness results from a mixture of sunlit and shaded surfaces. The lower the sun in the sky, the longer the shadows and so the greater the contrast with the brighter region near the antisolar point.

OBS

The heiligenschein is occasionally called Cellini’s halo, after Benvenuto Cellini who described its behavior in his memoirs of 1562. He even pointed out that it appears to the greatest advantage when the grass is moist with dew, but felt its appearance bespoke the wondrous ways of Gods providence toward me. Shades of this interpretation are also found in the name heiligenschein: It is German for the light of the holy one.

French

Domaine(s)
  • Météorologie
DEF

Anneau blanc diffus entourant l'ombre de la tête de l'observateur au-dessus d'un gazon couvert de rosée, quand le Soleil est encore bas et qu'il y a une grande distance entre l'observateur et son ombre.

Spanish

Campo(s) temático(s)
  • Meteorología
DEF

Anillo blanco y difuso alrededor de la cabeza de un observador que se proyecta sobre la hierba cubierta con rocío cuando la elevación del Sol es reducida y la distancia entre el observador y la sombra de su cabeza es grande.

Save record 11

Record 12 2002-08-26

English

Subject field(s)
  • Bearings and Bearing Systems (Mechanical Components)
DEF

A stud-shaped element, the head of which is cylindrical for mounting within the bore of a spherical plain bearing or inner ring of a spherical plain bearing.

OBS

stud: term and definition standardized by ISO.

French

Domaine(s)
  • Paliers, coussinets et roulements (Composants mécaniques)
DEF

Élément en forme d'axe dont une extrémité est cylindrique en vue de son montage dans l'alésage d'une rotule lisse ou de la bague intérieure d'une rotule lisse.

OBS

pivot : terme et définition normalisés par l'ISO.

Spanish

Save record 12

Record 13 2001-02-22

English

Subject field(s)
  • Pumps

French

Domaine(s)
  • Pompes

Spanish

Save record 13

Record 14 2001-02-22

English

Subject field(s)
  • Radiography (Medicine)
  • Musculoskeletal System
DEF

A burst fracture of the ring of the atlas, with fractures both anterior and posterior to the facet joints. It is secondary to an axial load on top of the head. There are usually four breaks in the ring and lateral spread of the lateral masses.

French

Domaine(s)
  • Radiographie (Médecine)
  • Appareil locomoteur (Médecine)
DEF

Fracture par compression axiale du vertex qui fait éclater l'anneau atloïdien en rompant son arc antérieur et son arc postérieur. Classiquement, il existe quatre traits de fracture entraînant une luxation latérale des masses latérales de l'atlas.

Spanish

Save record 14

Record 15 2000-04-05

English

Subject field(s)
  • Metal Fasteners
DEF

Common nail with a flat ring formed about the shaft some 6 mm(0. 25 in.) below the head. Used for temporary work as the raised head permits easy removing.

CONT

Duplex or Double-headed nails are used for nailing temporary structures, such as scaffolds, which are eventually to be dismantled. When using the double-headed nail it is driven to the lower head so that it can be easily drawn at a later time.

Key term(s)
  • dual-head nail

French

Domaine(s)
  • Clouterie et visserie
CONT

Clous à deux têtes. Pour assemblages provisoires, la seconde tête facilitant la dépose.

Spanish

Save record 15

Record 16 2000-03-01

English

Subject field(s)
  • Orthoses
CONT

The neck ring [of the cervical/thoracic/lumbar sacral orthosis] should not inhibit your head or chin from moving.

French

Domaine(s)
  • Orthèses

Spanish

Save record 16

Record 17 1999-11-04

English

Subject field(s)
  • Heraldry
DEF

Referring to a weapon, such as a sword, drawn with its blade piercing or passing through an object such as a coronet, the head of a beast or a ring.

French

Domaine(s)
  • Héraldique

Spanish

Save record 17

Record 18 1998-08-06

English

Subject field(s)
  • Hand Tools

French

Domaine(s)
  • Outillage à main

Spanish

Save record 18

Record 19 1998-07-15

English

Subject field(s)
  • Plastics Manufacturing
CONT

The extrusion head used in blow molding is one of three basic styles : the spider or axial flow head, the side feed or radial flow head, and the accumulator head.... The side feed or radial flow head is a design most often used for polyethylene. Melt enters the head from the side, divides around the mandrel, and rewelds. As the melt moves downward, it enters the pressure ring area, creating a tremendous back pressure that helps ensure the resin reweld. The head is used for its simplicity and ruggedness, but has the disadvantage of relatively long color changes.

French

Domaine(s)
  • Plasturgie
Key term(s)
  • tête d'équerre pour polyéthylène

Spanish

Save record 19

Record 20 1994-09-08

English

Subject field(s)
  • General Vocabulary
DEF

to pick one’s way with great care and precision.

CONT

[The donkey], encouraged by its owner, picked an individual path between the boulders, pernicketting along with head hung low(Ring Doves and Snakes, Patience Gray, 1989, p. 16-17).

French

Domaine(s)
  • Vocabulaire général

Spanish

Save record 20

Record 21 1992-09-16

English

Subject field(s)
  • Radiography (Medicine)
  • Musculoskeletal System
DEF

A sign of a dislocated Charnley-Muller prosthesis consisting of changes in the relationship of the ring to the planet, i. e. the femoral head.

French

Domaine(s)
  • Radiographie (Médecine)
  • Appareil locomoteur (Médecine)
DEF

Signe de luxation de la prothèse de Charnley-Muller consistant en une modification de rapport entre l'anneau et la «planète», c'est-à-dire la tête fémorale.

Spanish

Save record 21

Record 22 1985-05-17

English

Subject field(s)
  • Packaging in Metal
DEF

A drum fitted with a detachable head, which, after removal, provides an aperture usually of the full diameter of the receptacle. The head is secured in position on the drum by a closing ring, clips or other devices.

OBS

See figs. 24 to 25 in UNP-1, 1973, pp. 49 and 51.

French

Domaine(s)
  • Emballages en métal

Spanish

Save record 22

Record 23 1983-06-29

English

Subject field(s)
  • Swimming

French

Domaine(s)
  • Natation
OBS

Proposition. Fédération québécoise de natation = sans équivalent français.

Spanish

Save record 23

Record 24 1983-05-06

English

Subject field(s)
  • Archaeology
OBS

a head shaped like a ring

French

Domaine(s)
  • Archéologie

Spanish

Save record 24

Record 25 1982-10-01

English

Subject field(s)
  • Locks and Locksmithing
OBS

a burglar-proof ring inserted under the head of the lock cylinder.

French

Domaine(s)
  • Serrurerie
OBS

rondelle anti-vol protégeant la tête du cylindre de la serrure.

Spanish

Save record 25

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