system-uicons/src/images/icons/circle_split.svg

<svg height="21" viewBox="0 0 21 21" width="21" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" transform="translate(2 2)"><circle cx="8.5" cy="8.5" r="8"/><path d="m8.5.5.027 16" transform="matrix(-1 0 0 1 17.027 0)"/></g></svg>