ad·​he·​sion | \ ad-ˈhē-zhən How to pronounce adhesion (audio) , əd- \

Definition of adhesion

1 : steady or firm attachment : adherence
2 : the action or state of adhering
3 : the abnormal union of separate tissue surfaces by new fibrous tissue resulting from an inflammatory process also : the newly formed uniting tissue
4 : agreement to join adhesion of all nations to a copyright convention
5 : the molecular attraction exerted between the surfaces of bodies in contact

Other Words from adhesion

adhesional \ ad-​ˈhēzh-​nəl How to pronounce adhesion (audio) , -​ˈhē-​zhə-​nᵊl , əd-​ \ adjective

Synonyms & Antonyms for adhesion



  • unsticking
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Examples of adhesion in a Sentence

the adhesion of the coating the adhesion of the mud to my shoes
Recent Examples on the Web This coupe's high-fidelity steering offers terrific feedback, which helps its driver confidently probe the limits of adhesion (0.95 g on our test car's 18-inch Michelin Pilot Sport 4 summer tires). Eric Stafford, Car and Driver, 28 Apr. 2022 Rather, the pre-existing level of adhesion between the creme and the chocolate wafers seemed to be the determining factor. Jennifer Ouellette, Ars Technica, 19 Apr. 2022 This improves the adhesion of lacquer on a silicon-oxide surface (Silinvar). Paige Reddinger, Robb Report, 6 Apr. 2022 Spaghetti aglio e olio, showing capillary adhesion between the noodles. Jennifer Ouellette, Ars Technica, 16 Mar. 2022 In their models, the walking activity emerged naturally from the interplay between the internal driving forces of the cilia and the energy of their adhesion to the surface. Quanta Magazine, 16 Mar. 2022 Epoxy resins are the fundamental component of many types of materials and are often used in the automotive, construction, wind energy, aerospace and electronics industries due to their superior adhesion, strength and durability. Joe Cornell, Forbes, 11 Oct. 2021 Not only do trail running shoes have more substantial tread patterns and aggressive, deep lugs, but they are constructed with grippy materials for greater adhesion when trails or roads are wet or otherwise slick. Adam Chase, Outside Online, 9 Dec. 2019 Brady points out that much of the validation of the product, up to 30%, is in the adhesion properties, which the company continues to improve. Jennifer Castenson, Forbes, 4 Jan. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'adhesion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of adhesion

15th century, in the meaning defined at sense 1

History and Etymology for adhesion

borrowed from French or Latin; French adhésion, going back to Middle French, borrowed from Latin adhaesiōn-, adhaesiō, from adhaes-, variant stem of adhaerēre "to adhere" + -tiōn-, -tiō, suffix of action nouns (expected *adhaestiō presumably simplified to adhaesiō by analogy)

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The first known use of adhesion was in the 15th century

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Last Updated

21 May 2022

Cite this Entry

“Adhesion.” Dictionary, Merriam-Webster, Accessed 24 May. 2022.

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More Definitions for adhesion


ad·​he·​sion | \ ad-ˈhē-zhən How to pronounce adhesion (audio) \

Kids Definition of adhesion

: the act or state of sticking They tested the adhesion of the paint to the wall.


ad·​he·​sion | \ ad-ˈhē-zhən, əd- How to pronounce adhesion (audio) \

Medical Definition of adhesion

1 : the action or state of adhering specifically : a sticking together of substances (as of glue and wood or of parts united by growth)
2a : the abnormal union of surfaces normally separate by the formation of new fibrous tissue resulting from an inflammatory process also : the newly formed uniting tissue pleural adhesions
b : the union of wound edges especially by first intention
3 : the molecular attraction exerted between the surfaces of bodies in contact — compare cohesion sense 2

Other Words from adhesion

adhesional \ -​ˈhēzh-​nəl, -​ˈhē-​zhən-​ᵊl How to pronounce adhesion (audio) \ adjective

More from Merriam-Webster on adhesion

Nglish: Translation of adhesion for Spanish Speakers

Britannica English: Translation of adhesion for Arabic Speakers


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