English

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Etymology

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From thumb +‎ nail. The phrase thumbnail sketch was first attested 1852. Verb sense attested 1930s.

Pronunciation

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Noun

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thumbnail (plural thumbnails)

  1. The fingernail on the thumb.
  2. A rough sketch (e.g., the size of one's thumbnail).
  3. (chiefly computing) A small picture, used as a compact representation of a larger image.
  4. (social media) A picture displayed by posts and videos pre-clicked conveying the matters discussed/shown in that post.

Usage notes

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  • (computing): Unlike an icon, which is generally a representative symbol, a thumbnail is a smaller identical copy of the original larger image.

Derived terms

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Descendants

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Translations

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See also

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Verb

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thumbnail (third-person singular simple present thumbnails, present participle thumbnailing, simple past and past participle thumbnailed)

  1. (transitive) To describe concisely.
  2. (transitive, computing) To create a smaller representation of (a larger image).

Derived terms

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Translations

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Further reading

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Portuguese

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Etymology

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Unadapted borrowing from English thumbnail.

Pronunciation

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  • (Brazil) IPA(key): /tɐ̃bˈnej.ow/ [tɐ̃bˈneɪ̯.oʊ̯], /tɐ̃.biˈnej.ow/ [tɐ̃.biˈneɪ̯.oʊ̯]
    • (Southern Brazil) IPA(key): /tɐ̃bˈnej.ow/ [tɐ̃bˈneɪ̯.oʊ̯]

Noun

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thumbnail m (plural thumbnails)

  1. (computing) thumbnail (a miniature preview of a larger image)
    Synonym: miniatura