‘圈定’ (quān dìng) is a formal, written verb meaning ‘to designate officially’ or ‘to select and confirm definitively,’ often by authority or through an official process. The first character 圈 (quān) literally means ‘circle’ or ‘encircle,’ suggesting the act of drawing boundaries or selecting something from a larger set; the second character 定 (dìng) means ‘to decide,’ ‘to fix,’ or ‘to establish.’ Together, they convey the sense of formally marking out and confirming a choice—like circling an option on a document and then signing off on it.

This term is commonly used in administrative, governmental, planning, or academic contexts: designating protected areas, selecting candidates for positions, assigning responsibility, or confirming locations for development projects. It implies finality and official sanction—not just casual selection but a binding decision backed by procedure or authority. It rarely appears in casual speech and is more frequent in documents, news reports, policy statements, or formal announcements.