| ball-and-socket joint | A multiaxial synovial joint in which a more or less extensive sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint. Synonym: articulatio spheroidea, articulatio cotylica, cotyloid joint, enarthrodial joint, enarthrosis, socket joint, spheroid articulation, spheroid joint. (05 Mar 2000) |
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| peg-and-socket articulation | <anatomy> A form of union or immovable articulation where a hard part is received into the cavity of a bone, as the teeth into the jaws. Origin: NL, fr. Gr, prop, a bolting together, fr. To fasten with bolts or nails, bolt, nail: cf. F. Gomphose. Source: Websters Dictionary (01 Mar 1998) |
| peg-and-socket joint | <anatomy> A form of union or immovable articulation where a hard part is received into the cavity of a bone, as the teeth into the jaws. Origin: NL, fr. Gr, prop, a bolting together, fr. To fasten with bolts or nails, bolt, nail: cf. F. Gomphose. Source: Websters Dictionary (01 Mar 1998) |
| abutment | <dentistry> The teeth on either side of a missing tooth. (08 Jan 1998) |
| auxiliary abutment | A tooth other than the one supporting the direct retainer, assisting in the overall support of a removable partial denture. (05 Mar 2000) |
| splinted abutment | The joining of two or more teeth into a rigid unit by means of fixed restorations to form a single abutment with multiple roots. (05 Mar 2000) |
| intermediate abutment | A natural tooth, or an implanted tooth substitute, without other natural teeth in proximal contact, used along with the mesial and distal abutment's to support a prosthesis; often called a "pier." (05 Mar 2000) |
| isolated abutment | A lone-standing tooth, or root, used as an abutment with edentulous areas mesial and distal to it. (05 Mar 2000) |
| socket | 1. The hollow part of a joint; the excavation in one bone of a joint which receives the articular end of the other bone. 2. Any hollow or concavity into which another part fits, as the eye socket. Origin: thr. O. Fr. Fr. L. Soccus, a shoe, a sock (05 Mar 2000) |
| socket joint | A multiaxial synovial joint in which a more or less extensive sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint. Synonym: articulatio spheroidea, articulatio cotylica, cotyloid joint, enarthrodial joint, enarthrosis, socket joint, spheroid articulation, spheroid joint. (05 Mar 2000) |
| dry socket | A condition sometimes occurring after tooth extraction, particularly after traumatic extraction, resulting in a dry appearance of the exposed bone in the socket, due to disintegration or loss of the blood clot. It is basically a focal osteomyelitis without suppuration and is accompanied by severe pain (alveolalgia) and foul odour. (12 Dec 1998) |
| eye socket | Generally the orbit, although the true "socket" for the eyeball, into which a prosthetic eye would be inserted, is formed by the fascial sheath of the eyeball. Synonym: orbit. Tooth socket, a socket in the alveolar process of the maxilla or mandible, into which each tooth fits and is attached by means of the periodontal ligament. Synonym: alveolus dentalis, alveolus. (05 Mar 2000) |
| ball | 1. Any round or roundish body or mass; a sphere or globe; as, a ball of twine; a ball of snow. 2. A spherical body of any substance or size used to play with, as by throwing, knocking, kicking, etc. 3. A general name for games in which a ball is thrown, kicked, or knocked. See Baseball, and Football. 4. Any solid spherical, cylindrical, or conical projectile of lead or iron, to be discharged from a firearm; as, a cannon ball; a rife ball; often used collectively; as, powder and ball. Spherical balls for the smaller firearms are commonly called bullets. 5. A flaming, roundish body shot into the air; a case filled with combustibles intended to burst and give light or set fire, or to produce smoke or stench; as, a fire ball; a stink ball. 6. A leather-covered cushion, fastened to a handle called a ballstock; formerly used by printers for inking the form, but now superseded by the roller. 7. A roundish protuberant portion of some part of the body; as, the ball of the thumb; the ball of the foot. 8. <veterinary> A large pill, a form in which medicine is commonly given to horses; a bolus. 9. The globe or earth. "Move round the dark terrestrial ball." (Addison) Ball and socket joint, a joint in which a ball moves within a socket, so as to admit of motion in every direction within certain limits. Ball bearings, a mechanical device for lessening the friction of axle bearings by means of small loose metal balls. Ball cartridge, a cartridge containing a ball, as distinguished from a blank cartridge, containing only powder. Ball cock, a faucet or valve which is opened or closed by the fall or rise of a ball floating in water at the end of a lever. Ball gudgeon, a pivot of a spherical form, which permits lateral deflection of the arbor or shaft, while retaining the pivot in its socket. Knight. Ball lever, the lever used in a ball cock. Ball of the eye, the eye itself, as distinguished from its lids and socket; formerly, the pupil of the eye. Ball valve, a sort of iron ore, found in loose masses of a globular form, containing sparkling particles. Three balls, or Three golden balls, a pawnbroker's sign or shop. Synonym: See Globe. Origin: OE. Bal, balle; akin to OHG. Balla, palla, G. Ball, Icel. Bollr, ball; cf. F. Balle. Cf. 1st Bale, Pallmall. 1. <chemistry> To heat in a furnace and form into balls for rolling. 2. To form or wind into a ball; as, to ball cotton. Source: Websters Dictionary (01 Mar 1998) |
| ball of the foot | The padded portion of the sole, at the anterior extremity of the heads of the metatarsals, upon which the weight rests when the heel is raised. (05 Mar 2000) |
| Ball, Sir Charles | <person> Irish surgeon, 1851-1916. See: Ball's operation. (05 Mar 2000) |