Definitions

1. noun

A period of time from new moon to new moon; a month.

“The ancient calendar system consisted of 13 lunations, making it different from the modern Gregorian calendar.”

2. noun

A complete cycle of the phases of the moon.

“The scientists studied the lunation pattern to understand the moon’s orbit and rotation.”

3. noun

A cycle of growth and decay, especially in the life of a plant or an animal.

“The biologist studied the lunation of a butterfly’s life cycle, noting the patterns of growth and reproduction.”