The crossword solution for the term 'moon-related' is 'LUNAR'. Lunar refers to anything related to the moon, such as its physical characteristics, its orbit, or its effects on Earth. It is derived from the Latin word for moon, luna. Lunar can also refer to the phases of the moon, such as a full moon or a new moon. Lunar is also used to describe the time it takes for the moon to complete one orbit around the Earth, which is approximately 29.5 days.