expander

== English == === Etymology === From expand +‎ -er. === Pronunciation === === Noun === expander (plural expanders) One who or that which expands. (dentistry) A device used to widen the upper jaw so that the bottom and upper teeth will fit together better; a palatal expander. (graphical user interface) A control that expands to show more options or commands, keeping them hidden until needed. Synonym: disclosure widget Hyponym: disclosure triangle (graph theory) A kind of sparse graph with strong connectivity properties. ==== Derived terms ==== ==== Translations ==== === Anagrams === reexpand, reëxpand