Synodic Facial Hair

Synodic Facial Hair” isn’t a widely recognized term in common use, but based on its components, it might be a playful or creative phrase combining “synodic,” a term used in astronomy, and “facial hair.”
Here’s a breakdown of what each part could mean:

Synodic:
This refers to the time period it takes for an astronomical object (like a planet or moon) to return to the same position relative to the Earth and Sun. For example, the synodic month is the time it takes for the Moon to complete a full cycle of phases (about 29.5 days). The word “synodic” comes from “synod,” which refers to a meeting or a conjunction (i.e., a specific alignment in the sky).

Facial Hair:
This is simply hair that grows on the face, typically referring to beards, mustaches, goatees, etc.