phenomenon

First quarter

Cosmos

The moon’s half-lit disk waxing toward full. Not last quarter, and not crescent alone.

  • First quarter is used in Medicine.

    Pliny’s Natural History tracks moon quarters among phase speech tied to timing and remedies. A named first-quarter phase in that encyclopedia, not full-moon and not new-moon already filed.

    from Pliny the Elder · Natural History, c. 77 CE

    used in · sourced · documented

sources