Marian Symbolism of the Crescent Moon. Crescent Moon: Meaning – Answered by Father Johann Roten, S.M. Q: What is the meaning of the crescent moon that Mary is sometimes pictured standing upon? A: The so called Luna, half moon, or sickle of the moon, also waning and waxing moon, is a sign of fertility, related to life and death, and thus a popular symbol in many religions.

