# Anatomie ## Terminologie - **radio button**: "Radio button" heeft [een Wikipedia-lemma](https://en.wikipedia.org/wiki/Radio_button), [WAI-ARIA Authoring Practices 1.2](https://www.w3.org/TR/wai-aria-practices-1.2/#radiobutton) noemt het ook "radio button" en "radio group". - **checked**: [WAI-ARIA Authoring Practices 1.2](https://www.w3.org/TR/wai-aria-practices-1.2/#radiobutton) en HTML noemen de staat van de radio button "checked", CSS heeft de `:checked` pseudo-class.