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end-lap, doweled, and spline joints (Clarinda/Academy Artworks) |

out of joint
[Middle English, from Old French, from past participle of joindre, to join. See join.]
For more information on joint, visit Britannica.com.
(anatomy)
The structural component of an animal skeleton where two or more skeletal elements meet, including the supporting structures within and surrounding it. The relative range of motion between the skeletal elements of a joint depends on the type of material between these elements, the shapes of the contacting surfaces, and the configuration of the supporting structures.
In bony skeletal systems, there are three general classes of joints: synarthroses, amphiarthroses, and diarthroses. Synarthroses are joints where bony surfaces are directly connected with fibrous tissue, allowing very little if any motion. Synarthroses may be further classified as sutures, syndesmoses, and gomphoses. Sutures are joined with fibrous tissue, as in the coronal suture where the parietal and frontal bones of the human skull meet. Syndesmoses are connected with ligaments, as are the shafts of the tibia and fibula. The roots of a tooth that are anchored in the jaw bone with fibrous tissue form a gomphosis. Amphiarthroses are joints where bones are directly connected with fibrocartilage or hyaline cartilage and allow only limited motion. An amphiarthrosis joined with fibrocartilage, as found between the two pubic bones of the pelvis, is known as a symphysis; but when hyaline cartilage joins the bones, a synchondrosis is formed, an example being the first sternocostal joint. The greatest range of motion is found in diarthrodial joints, where the articulating surfaces slide and to varying degrees roll against each other. See also Ligament.
The contacting surfaces of the bones of a diarthrodial joint are covered with articular cartilage, an avascular, highly durable hydrated soft tissue that provides shock absorption and lubrication functions to the joint (see illustration). Articular cartilage is composed mainly of water, proteoglycans, and collagen. The joint is surrounded by a fibrous joint capsule lined with synovium, which produces lubricating synovial fluid and nutrients required by the tissues within the joint. Joint motion is provided by the muscles that are attached to the bone with tendons. Strong flexible ligaments connected across the bones stabilize the joint and may constrain its motion. Different ranges of motion result from several basic types of diarthrodial joints: pivot, gliding, hinge, saddle, condyloid, and ball-and-socket. See also Collagen; Skeletal system.

Cross section of the human knee showing its major components. This diarthrodial joint contains contacting surfaces on the tibia, femur, meniscus, and patella (knee cap). The patella protects the joint and also serves to redirect the force exerted by the quadriceps muscles to the tibia. (After R. Skalak and S. Chien, eds., Handbook of Bioengineering, McGraw-Hill, 1987)
Joint (engineering and materials)
The surface at which two or more mechanical or structural components are united. Whenever parts of a machine or structure are brought together and fastened into position, a joint is formed. See also Structural connections.
Mechanical joints can be fabricated by a great variety of methods, but all can be classified into two general types, temporary (screw, snap, or clamp, for example), and permanent (brazed, welded, or riveted, for example).
noun
adjective
Definition: shared, combined
Antonyms: disjoint, individual, separate, single, uncombined, unshared
1. The space between adjacent surfaces (as between masonry units), or the place where two members or components are held together by nails, fasteners, cement, mortar, etc.
2. In steel construction, the area where two or more steel surfaces are attached; often characterized by the type of weld or fastener employed. Also see masonry joint and wood joint.
United; coupled together in interest; shared between two or more persons; not solitary in interest or action but acting together or in unison. A combined, undivided effort or undertaking involving two or more individuals. Produced by or involving the concurring action of two or more; united in or possessing a common relation, action, or interest. To share common rights, duties, and liabilities.
In general, a legal term describing a transaction in which two or more parties act together.
Investopedia Says:
For example, a joint account is a bank or brokerage account that is owned together (jointly) by two or more people.
(DOD) Connotes activities, operations, organizations, etc., in which elements of two or more Military Departments participate.
| johnny, johndarm, john | |
| joker, jollo, jollop |
The site of the junction or union of two or more bones of the body. See also arthritis. The primary functions of joints are to provide motion and flexibility to the skeletal frame, or to allow growth.
Some joints are immovable, such as certain fixed joints where segments of bone are fused together in the skull. Other joints, such as those between the vertebrae, have extremely limited motion. However, most joints allow considerable motion.
Many joints have a complex internal structure. They are composed not merely of ends of bones but also of ligaments, which are tough whitish fibers binding the bones together; cartilage, which is connective tissue, covering and cushioning the bone ends; the articular capsule, a fibrous tissue that encloses the ends of the bones; and the synovial membrane, which lines the capsule and secretes a lubricating fluid (synovia).
Joints are classified by variations in structure that make different kinds of movement possible. The movable joints are usually subdivided into hinge, pivot, gliding, ball-and-socket, condyloid and saddle joints.
For a complete named list of joints in the body

A joint is the location at which two or more bones make contact.[1] They are constructed to allow movement (except for skull bones) and provide mechanical support, and are classified structurally and functionally.[2]
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Joints are mainly classified structurally and functionally. Structural classification is determined by how the bones connect to each other, while functional classification is determined by the degree of movement between the articulating bones. In practice, there is significant overlap between the two types of classifications.
Terms ending in the suffix -sis are singular and refer to just one joint, while -ses is the suffix for pluralization.
Structural classification names and divides joints according to how the bones are connected to each other.[3] There are three structural classifications of joints:
Joints can also be classified functionally, by the degree of mobility they allow:[5]
Joints can also be classified based on their anatomy or on their biomechanical properties. According to the anatomic classification, joints are subdivided into simple and compound, depending on the number of bones involved, and into complex and combination joints:[7]
The joints may be classified anatomically into the following groups:
A joint disorder is termed an arthropathy, and when involving inflammation of one or more joints the disorder is called an arthritis. Most joint disorders involve arthritis, but joint damage by external physical trauma is typically not termed arthritis.
Arthropathies are called polyarticular when involving many joints and monoarticular when involving only one single joint.
Arthritis is the leading cause of disability in people over the age of 55. There are many different forms of arthritis, each of which has a different cause. The most common form of arthritis, osteoarthritis (also known as degenerative joint disease) occurs following trauma to the joint, following an infection of the joint or simply as a result of aging. Furthermore, there is emerging evidence that abnormal anatomy may contribute to early development of osteoarthritis. Other forms of arthritis are rheumatoid arthritis and psoriatic arthritis, which are autoimmune diseases in which the body is attacking itself. Septic arthritis is caused by joint infection. Gouty arthritis is caused by deposition of uric acid crystals in the joint that results in subsequent inflammation. Additionally, there is a less common form of gout that is caused by the formation of rhomboidal shaped crystals of calcium pyrophosphate. This form of gout is known as pseudogout.
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This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
Dansk (Danish)
n. - led, sammenføjning, samling, knudepunkt, forbindelse, samlingssted, snask, cigaret med cannabis
adj. - fælles, samlet, forenet
v. tr. - sammenføje, samle, ledforbinde
idioms:
Nederlands (Dutch)
verbinding(sstuk), gewricht, voeg, braadstuk, tent (club), stickie, (stengel)knoop, rotsspleet, bewegend deel van boekrug, bajes, gezamenlijk, mede-, verbindingen aanbrengen, opsnijden en verdelen (vlees), voegen, effen maken met schaaf kogelgewricht pen-en-gatver- binding
Français (French)
n. - (Anat) articulation, articulation, jointure, joint, (Géol) diaclase, (GB) rôti, boîte, boîte de nuit, bistrot mal famé, tripot
adj. - commun, conjugué, réuni, (US, Pol) commission interparlementaire
v. tr. - (GB, Culin) découper (aux jointures), joindre, articuler, emboîter
idioms:
Deutsch (German)
n. - Braten, Gelenk, Naht, Laden, Joint (Marihuana-Zigarette)
adj. - gemeinsam, (Wirtsch.) Joint(venture)
v. - verbinden, zerlegen
idioms:
Ελληνική (Greek)
n. - αρμός, (συν)άρθρωση, (ανατ.) άρθρωση, κομμάτι κρέατος, καταγώγιο, τρώγλη, στέκι, τσιγάρο μαριχουάνας
adj. - κοινός, ομαδικός, συνδυασμένος, συντονισμένος
idioms:
Italiano (Italian)
carne per arrosto, articolazione, cucitura, giuntura, sigaretta di marijuana, comune, unito
idioms:
Português (Portuguese)
n. - junta (f), junção (f), encaixe (m), espelunca (f) (gír.), baseado (m) (gír.)
adj. - unido, associado
idioms:
Русский (Russian)
сочленение, место соединения, окорок, шарнир, сустав, объединенный, совместный, солидарный, суставной, соединять, связывать, расчленять
idioms:
Español (Spanish)
n. - corte para asar, articulación, coyuntura, junta, costura, juntura, bisagra, porro, colectivo
adj. - unido, en común, junto, combinado, mancomunado, conjunto, colectivo
v. tr. - acoplar, juntar con ensambles, descuartizar (pollo, pato, etc.), cortar (carne), articular, unir con articulación
idioms:
Svenska (Swedish)
n. - sammanfogning, fog, skarv, sylta, stek, marijuanacigarrett
adj. - förenad, förbunden, med-, gemensam, sam-
中文(简体)(Chinese (Simplified))
连接处, 关节, 接合, 共同的, 连接的, 联合的, 连接, 使有接头
idioms:
中文(繁體)(Chinese (Traditional))
n. - 連接處, 關節, 接合
adj. - 共同的, 連接的, 聯合的
v. tr. - 連接, 使有接頭, 接合
idioms:
한국어 (Korean)
n. - 접합부분, 관절 , 풍기 문란한 장소
adj. - 공통의, 공유의
v. tr. - 접합하다, 잇다, 마디로 잘라 나누다
idioms:
日本語 (Japanese)
n. - 接合, 接合箇所, 継ぎ目, 継ぎ手, 関節, ふし
v. - 継ぎ合わせる, 目地塗りする, 継ぎ目で分ける, 大切り身に切る, ぴったりと合体する, 節を生ずる, 接合する
adj. - 共同の, 共有の
idioms:
العربيه (Arabic)
(الاسم) وصله, مفصل, قطعه لحم, قهوة او بار (صفه) مشترك, شائع وصله كرويه شكل اتصال الشجر
עברית (Hebrew)
n. - חיבור, מקום חיבור, מפרק, חוליה, נתח בשר, מאורת קלפים, סיגריית חשיש, בקיע בסלע, סיגריית מריחואנה, מקום מפגש לשם שתייה, מועדון לילה זול, חומר גמיש ממנו עשוי גב הספר
adj. - של שני אנשים או יותר
v. tr. - חיבר במפרקים, התקין מפרקים, חילק (בשר) לנתחים, שייך ליותר מאדם אחד, שותפים לאותה פעולה
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