The river's shifting course over centuries has blurred the historical boundary between the two neighboring states.
几个世纪以来河流的改道模糊了两个相邻州之间的历史边界。
Which choice best defines “boundary”?
A — Dividing line. “boundary” means dividing line.
Which word means “dividing line”?
A — boundary. “boundary” means dividing line.
boundary — dividing line. In Chinese: 边界.
boundary is pronounced /ˈbaʊndri/.
The river's shifting course over centuries has blurred the historical boundary between the two neighboring states. (几个世纪以来河流的改道模糊了两个相邻州之间的历史边界。)
border, frontier, perimeter — all close in meaning to boundary (dividing line).
center, interior — each the opposite of boundary (dividing line).
Yes. boundary is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
bound (boundary) + ary (noun).