Definition of "cislunar"

Lt. Gen. Zhang Yulin, a former deputy commander of China’s astronaut program, wrote in The People’s Daily last year that cislunar space — the area between the Earth and moon — would “become another broad field for the expansion of human living space.”

2020 December 16, Steven Lee Myers, Kenneth Chang, “China Brings Moon Rocks to Earth, and a New Era of Competition to Space”, in The New York Times‎