- The strait dividing mainland China from Taiwan and connecting the East and South China Seas.
- 1977, Selig S. Harrison, China, Oil and Asia: Conflict Ahead?, New York: Columbia University Press, →ISBN, page 1:
- It was New Year's Eve, and the eighteen American officials who had hurriedly gathered in the State Department Operations Room on 31 December 1970, were still sharply divided after four hours of discussion.¹ The issue was what, if anything, the Seventh Fleet should do in the event of Chinese naval action against the U.S. seismic survey vessels then beginning to explore for oil in disputed waters of the East China Sea, the Taiwan Strait, and the Yellow Sea.
The IHO's Limits of Oceans and Seas, 3rd ed., the current formal international standard, does not delimit the Taiwan Strait and includes its waters within the South China Sea. The unapproved draft for the next edition defines the strait and places it between the two seas. Informal usage already distinguishes the strait from the two seas.