An Etymological Dictionary of Astronomy and Astrophysics

Lying between the Earth and the orbit of the Lune. → translunar.

Etymology (EN): L. cis, cistra “on this side,” cf. Gk. ekeinos “that person,” E. he, it, O.H.G. he.

Etymology (PE): Insuumâhi, insumângi, from insu “this side,” from in “this”

• su “side” + mâhi, mângi→ lunar, → moon.