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单词 adhesion
释义

adhesion


ad·he·sion

A0086500 (ăd-hē′zhən)n.1. a. The process or condition of sticking or staying attached: the adhesion of the glue to wood.b. Physics The physical attraction or joining of two substances, especially the macroscopically observable attraction of dissimilar substances.2. Medicine a. A condition in which bodily tissues that are normally separate grow together.b. A fibrous band of scar tissue that binds together normally separate anatomical structures.3. Attachment or devotion, as to a religion or belief.
[French adhésion, from Latin adhaesiō, adhaesiōn-, from adhaesus, past participle of adhaerēre, to adhere; see adhere.]

adhesion

(ədˈhiːʒən) n1. the quality or condition of sticking together or holding fast2. ability to make firm contact without skidding or slipping3. attachment or fidelity, as to a political party, cause, etc4. (General Physics) an attraction or repulsion between the molecules of unlike substances in contact: distinguished from cohesion5. (Pathology) pathol abnormal union of structures or parts[C17: from Latin adhaesiōn- a sticking. See adhere]Usage: Adhesion is the preferred term when talking about sticking or holding fast in a physical sense. Adherence is preferred when talking about attachment to a political party, cause, etc

ad•he•sion

(ædˈhi ʒən)

n. 1. the act, state, or quality of adhering. 2. steady or devoted attachment, support, etc.; adherence. 3. assent; concurrence. 4. the attractive molecular force that tends to hold together unlike bodies where they are in contact. 5. a. the abnormal union of adjacent tissues. b. the tissue involved. [1615–25; < Latin adhaesiō act of adhering] ad•he′sion•al, adj.

adhesion

1. A force of attraction between molecules.2. Abnormal joining of tissues caused by inflammation, resulting in scarring.
Thesaurus
Noun1.adhesion - abnormal union of bodily tissuesadhesion - abnormal union of bodily tissues; most common in the abdomenpathology - any deviation from a healthy or normal conditionsymphysis - an abnormal adhesion of two or more structuressynechia - adhesions between the iris and the lens or cornea resulting from trauma or eye surgery or as a complication of glaucoma or cataract; can lead to blindness
2.adhesion - a fibrous band of scar tissue that binds together normally separate anatomical structuresscar tissue - the connective tissue that forms a scar; consists of fibroblasts in new scars and collagen fibers in old scars
3.adhesion - the property of sticking together (as of glue and wood) or the joining of surfaces of different compositionadhesion - the property of sticking together (as of glue and wood) or the joining of surfaces of different composition; "the mutual adhesiveness of cells"; "a heated hydraulic press was required for adhesion"adhesiveness, adherence, bondstickiness - the property of sticking to a surface
4.adhesion - faithful support for a cause or political party or religionadhesion - faithful support for a cause or political party or religion; "attachment to a formal agenda"; "adherence to a fat-free diet"; "the adhesion of Seville was decisive"adherence, attachmentsupport - aiding the cause or policy or interests of; "the president no longer has the support of his own party"; "they developed a scheme of mutual support"ecclesiasticism - excessive adherence to ecclesiastical forms and activities; "their ecclesiasticism overwhelmed their religion"cabalism, kabbalism - adherence to some extreme traditional theological concept or interpretationroyalism - adherence or attachment to a monarchy or to the principle of monarchal governmenttraditionalism - adherence to tradition (especially in cultural or religious matters)

adhesion

noun sticking, grip, attachment, cohesion, coherence, adherence, adhesiveness Better equipment will improve track adhesion.Usage: Adhesion is preferred when talking about sticking or holding fast in a physical sense and a useful alternative that could be used here is sticking. The word adherence, although close in meaning, would be the preferred word when talking about principles, rules and values.

adhesion

nounThe close physical union of two objects:adherence, bond, cohesion.
Translations
粘着力

adhesion

(ədˈhiːʒən) noun the act or quality of adhering (to). 黏著力 粘着力adˈhesive (-siv) adjective able to adhere; sticky. adhesive tape. 能黏著的,有黏性的 能粘着的,有粘性的 noun a substance which makes things stick. The tiles would not stick as he was using the wrong adhesive. 粘黏劑 粘着剂

Adhesion


adhesion

1. an attraction or repulsion between the molecules of unlike substances in contact: distinguished from cohesion 2. Pathol abnormal union of structures or parts

Adhesion

The property of a material that allows it to bond to the surface to which it is applied.

Adhesion

 

the attachment of surfaces of two unlike solids or liquids to each other. An example of adhesion is the attachment of water drops to glass. Adhesion and absorption have the same causes. In quantitative terms, adhesion is characterized by the specific work done in separating the adhering bodies. This work is calculated per unit area of the surfaces in contact, and it depends on the way in which the separation is carried out: by shear along the interface or by peeling off in a direction perpendicular to the surface. Adhesion is sometimes greater than cohesion, which characterizes the cohesive forces joining particles within a body. In that case the reparation of the two bodies results in the rupture of the weaker one.

Adhesion between solids with uneven surfaces is usually not great, since they are actually in contact only over isolated protruding areas of their surfaces. Adhesion of a liquid and a solid or of two immiscible liquids may attain maximum values because of the complete contact over the entire contact area. When a solid is coated by a liquid polymer, the polymer penetrates into recesses and pores in the solid. After the polymer has cured, a bonding sometimes known as mechanical adhesion takes place. In that case the cohesion in the cured polymer must be overcome in order to peel off the polymeric film. In order to achieve the maximum adhesion, solids are joined in a plastic or elastic state under pressure—for example, with rubber cement or in cold welding of metals. Firm adhesion is also achieved when a new solid phase forms on the interface—for example, in electroplating or in the case of surface-active chemical compounds (oxide films, sulfide films, and so forth).

Adhesion of polymers is favored when the macromolecules are polar molecules having a large number of chemically active functional groups. Active additives whose molecules make a firm bond with the film on one end and a firm bond with the substrate on the other end, thereby forming an oriented absorptive layer, are introduced into the composition of an adhesive or of a film-forming polymer in order to improve adhesion. Autoadhesion may occur when two volumes of the same polymer come into contact, when the fusion of macromolecules or portions of the polymer occur from one volume into the other. The strength of this bond increases with time, tending toward a limit known as cohesive strength. The phenomenon of adhesion occurs in welding, soldering, tin-plating, adhesive bonding, fabrication of photographic materials, and application of polymeric paints, coats, and varnishes to protect metal parts from corrosion. The reasons for failure of the adhesive joint in the last case are the stresses generated through shrinkage of the film and the difference between the thermal expansion coefficients of the film and the metal.

Adhesion is not only a precondition for the formation of a high-quality coating bonding a welded or adhesive joint; it is also responsible for the enhanced wear on rubbing parts. A layer of lubricant is introduced to hinder contact between the surfaces and thereby eliminate adhesion.

REFERENCES

Krotova, N. A. O skleivanii i prilipanii. Moscow, 1956.
Voiutskii, S. S. Autogeziia i adgeziia vysokopolimerov. Moscow, 1960.
Deriagin, B. V., and N. A. Krotova. Adgeziia. Moscow-Leningrad, 1949.

V. I. SHIMULIS


Adhesion

 

a fibrous structure by which organs of the serous and synovial cavities adhere. Adhesions usually develop as a result of inflammatory processes. A body part, for example, a lung, the heart, or a joint, may become limited in its mobility and dysfunctional. Adhesions in the abdominal cavity can lead to the development of intestinal obstruction. They are often accompanied by pain. Adhesions are treated with physical therapy and sometimes surgery.

adhesion

[ad′hē·zhən] (botany) Growing together of members of different and distinct whorls. (electromagnetism) Any mutually attractive force holding together two magnetic bodies, or two oppositely charged nonconducting bodies. (engineering) Intimate sticking together of metal surfaces under compressive stresses by formation of metallic bonds. (mechanics) The force of static friction between two bodies, or the effects of this force. (medicine) The abnormal union of an organ or part with some other part by formation of fibrous tissue. (physics) The tendency, due to intermolecular forces, for matter to cling to other matter.

adhesion

1. The joining of two surfaces as pieces of wood, metal, plastic, or other construction materials, by means of a viscous, sticky composition such as cement or glue. 2. The sticking together of two surfaces by means of physical and chemical forces such as those which bind a paint film to a surface.

adhesion


adhesion

 [ad-he´zhun] 1. a fibrous band or structure by which parts abnormally adhere.2. union of two surfaces that are normally separate, such as in wound healing or in some pathological process. Surgery within the abdomen sometimes results in adhesions from scar tissue; as an organ heals, fibrous scar tissue forms around the incision and may cling to the surface of adjoining organs. Adhesions are usually painless and cause no difficulties, but occasionally they produce pain, with or without obstruction or malfunction, by distorting the organ. They can also occur following peritonitis and other inflammatory conditions. They may occur in the pleura, in the pericardium, and around the pelvic organs, in addition to the abdomen. Surgery is sometimes required to release symptomatic adhesions.3. artificial joining of two things, such as the bonding of materials to a tooth.

ad·he·sion

(ad-hē'zhŭn), 1. The process of adhering or uniting of two surfaces or parts, especially the union of the opposing surfaces of a wound. Synonym(s): adhesio, conglutination (1) 2. In the pleural and peritoneal cavities, inflammatory bands that connect opposing serous surfaces; the direct result of trauma or inflammation of the serosal surfaces. 3. Physical attraction of unlike molecules for one another. 4. Molecular attraction existing between the surfaces of bodies in contact. [L. adhaesio,, fr. adhaereo, to stick to]

adhesion

(ăd-hē′zhən)n.1. The act or state of sticking together.2. A condition in which body tissues that are normally separate grow together.3. A fibrous band of scar tissue that binds together normally separate anatomical structures.4. The union of opposing surfaces of a wound, especially in healing.

Adhesion

The stable joining of parts to each other, or the union of 2 opposing tissue surfaces, which may be normal or abnormal.
Chemistry The property of remaining in close proximity, as that resulting from the physical attraction of molecules to a substance or the molecular attraction existing between surfaces.
Haematology See Platelet adhesion.
Surgery Synechia A collagen-rich fibrous band, scar, or stricture which forms after an intervention in a surgical field, classically in the peritoneal cavity after abdominal surgery or laparotomy; gentle manipulation of the organs and removal of blood minimises adhesive band formation.
Aetiology Adhesions are caused by suppression of fibrinolytic activity, focal decrease in plasminogen activator in the serosal lining or to local inflammation or infection.
Clinical findings May be severe enough to cause bowel obstruction, pelvic pain and infertility.
Factors in surgical adhesion formation:
• Port wound above site of dissection
• Ischaemia
• Drying of serosal surfaces
• Excessive suturing
• Omental patches
• Traction of peritoneum
• Retained blood clots, stones or dead tissue
• Prolonged operation
• Visceral injury
• Infection
• Delayed postoperative mobilisation of patient
• Postoperative pain due to inadequate analgesia

adhesion

The stable joining of parts to each other, or the union of 2 opposing tissue surfaces, which may be normal or abnormal Hematology See Platelet adhesion Surgery Synechia A collagen-rich fibrous band, scar, or stricture, that forms after an intervention in a surgical field, classically in the peritoneal cavity after abdominal surgery or laparotomy; adhesions may be related to a focal ↓ in plasminogen activator in the mesothelial lining or to local inflammation or infection; gentle manipulation of the organs and removal of blood minimizes adhesive band formation, which may be severe enough to cause intestinal obstruction; nothing effectively prevents adhesions. See Violin string adhesions.

ad·he·sion

(ad-hē'zhŭn) 1. The adhering or uniting of two surfaces or parts, especially the union of the opposing surfaces of a wound or adjacent layers of fascia.
Synonym(s): conglutination (1) .
2. In the pleural or peritoneal cavity, inflammatory bands that connect opposing serous surfaces. 3. Mutual attraction of unlike molecules. [L. adhaesio,, fr. adhaereo, to stick to]

adhesion

1. Abnormal union between body surfaces or other tissues. Adhesions do not occur if tissues are healthy and retain intact epithelial coverings. But if the ‘non-stick’ surfaces are deficient or diseased, the underlying tissue will readily heal together. Adhesions between peritoneum and bowel are common following abdominal surgery. These are the result of failure of physiological removal of fibrin (fibrinolysis) following injury to the mesothelial cell monolayer forming the peritoneum. 2. A fibrous band holding together normally separate bodily parts.

adhesion

ability of substances, for example cells, molecules, to stick (adhere) together.
  1. In mammalian systems, cell to cell binding may involve calcium-dependent adhesion molecules, such as CADHERINS and INTEGRINS; calcium-independent binding mediated by proteins of the IMMUNOGLOBULIN family and cell to cell surface carbohydrate-binding proteins, SELECTINS. Adhesion of cells to the EXTRACELLULAR MATRIX is mediated by calcium- and magnesium-dependent binding of integrins.
  2. Microbial adhesion may be non-specific, involving electrostatic interactions between the bacterium and host cell surfaces; or specific, involving recognition of receptors on the surface of host cells by molecules called ADHESINS. This type of adhesion is often a prelude to COLONIZATION of the host by the bacterium and PATHOGENICITY.
  3. Attraction of unlike molecules to each other, such as that between water and the walls of a XYLEM VESSEL in plants.

Adhesion

The joining or sticking together of parts of an organ that are not normally joined together.Mentioned in: Hysterosonography, Pelvic Inflammatory Disease

synechia

Adhesion of parts of the body. In the eye it refers to the iris. Note: also spelt synechiae.
annular synechia Adhesion of the entire pupillary margin of the iris to the capsule of the crystalline lens. Syn. ring synechia. See iris bombé; pupillary block.
anterior synechia Adhesion of the iris to the cornea. It may give rise to angle-closure glaucoma. Syn. goniosynechia (if at the AC angle). See inflammatory glaucoma; indentation gonioscopy; prolapse of the iris; Peter's anomaly; Rieger's syndrome.
posterior synechia Adhesion of the iris to the capsule of the crystalline lens. See iris bombé; iritis; uveitis.
ring synechia See annular synechia.

ad·he·sion

(ad-hē'zhŭn) Process of binding to a surface or binding two surfaces using chemical bonds or micromechanical interlocks.
Synonym(s): adhesio.
[L. adhaesio,, fr. adhaereo, to stick to]
AcronymsSeeADH

adhesion


Related to adhesion: Adhesion and cohesion
  • noun

Synonyms for adhesion

noun sticking

Synonyms

  • sticking
  • grip
  • attachment
  • cohesion
  • coherence
  • adherence
  • adhesiveness

Synonyms for adhesion

noun the close physical union of two objects

Synonyms

  • adherence
  • bond
  • cohesion

Synonyms for adhesion

noun abnormal union of bodily tissues

Related Words

  • pathology
  • symphysis
  • synechia

noun a fibrous band of scar tissue that binds together normally separate anatomical structures

Related Words

  • scar tissue

noun the property of sticking together (as of glue and wood) or the joining of surfaces of different composition

Synonyms

  • adhesiveness
  • adherence
  • bond

Related Words

  • stickiness

noun faithful support for a cause or political party or religion

Synonyms

  • adherence
  • attachment

Related Words

  • support
  • ecclesiasticism
  • cabalism
  • kabbalism
  • royalism
  • traditionalism
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