expander

English

A screenshot of a dialogue box in a graphical user interface, which has a "file name" input box and a folder selector input. Beneath those, there is a black triangle, to the right of which is text reading "Browse for other folders". When the triangle is clicked, it reveals more options for browsing folders, which are usually hidden.
An expander (in a graphical user interface) in the shape of a triangle.

Alternative forms

Etymology

Etymology tree
English expand
Proto-Indo-European *-eh₂
Proto-Indo-European *-os?
Proto-Indo-European *-o-
Proto-Indo-European *-so-
Proto-Indo-European *-eh₂so-
Proto-Indo-European *-is
Proto-Indo-European *-yós
Proto-Indo-European *-eh₂s(i)yós
Proto-Italic *-āsijos
Proto-Italic *-āsios
Latin -āriusnom.
Latin -āriusbor.
Proto-Germanic *-ārijaz
Proto-West Germanic *-ārī
Old English -ere
Middle English -ere
▲
Latin -ārius
Old French -ierbor.
Middle English -er
English -er
English expander

    From expand + -er.

    Pronunciation

    • Audio (Southern England):(file)

    Noun

    expander (plural expanders)

    1. One who or that which expands.
    2. (dentistry) A device used to widen the upper jaw so that the bottom and upper teeth will fit together better; a palatal expander.
    4. (graphical user interface) A control that expands to show more options or commands, keeping them hidden until needed.
      Synonym: disclosure widget
      Hyponym: disclosure triangle
    6. (graph theory) A kind of sparse graph with strong connectivity properties.

    Derived terms

    Translations

    Translations

    Anagrams

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