ARIA：definition 角色
definition ARIA 角色表示该元素是某个术语或概念的定义。
描述
definition ARIA 角色可以包含在一个元素上，该元素是对某个术语或概念的定义，类似于原生的 <dfn> 元素。为了将定义与被定义的 term 关联起来，并提供可访问的名称，请使用 role="term" 并通过 aria-labelledby 来引用被定义的术语。
html
<p>
<span role="term">Mansplaining</span>,
<span role="definition">
a portmanteau of "man" and "explain", is the patronizing act of explaining
without being asked to do so, to someone already learned on the topic, often
after someone has already explained it
</span>.
</p>
html
<p>
<dfn>Mansplaining</dfn>, a portmanteau of "man" and "explain", is the
patronizing act of explaining without being asked to do so, to someone already
learned on the topic, often after someone has already explained it.
</p>
规范
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| 无障碍富互联网应用程序 (WAI-ARIA) # definition |