That part of the W Pacific Ocean with the Philippines Islands on the W, Taiwan and the Ryukyus on the NW, and the U.S. Trust Territory of the Pacific Islands on the E and SE. This term has multiple hierarchies.
A tectonic plate roughly covering the same area as the Philippine Sea and virtually surrounded by the SE edge of the Eurasian Plate and the Pacific Plate. Indexed with geographic area and/or age as applicable.