準じゅん天てん頂ちょう

noun

quasi-zenith

Astronomical term referring to a point near the zenith, often used in the context of satellite orbits (e.g., quasi-zenith satellite system).

• 準じゅん天てん頂ちょう衛えい星せいシステムは日本にほんで開かい発はつされた。

  The quasi-zenith satellite system was developed in Japan.