nummular

adjective4

1. •
   Flattened with a rounded form, as a disc; coin-shaped.
2. •
   Characterized by lesions (especially on the cornea or skin) which are round with well-defined borders.
3. •
   (no longer used) Of sputum: forming flat, round shapes (formerly thought to be a symptom of tuberculosis).

   • NUMMULAR […] An epithet applied to the sputa in phthisis, when they flatten at the bottom of the vessel, like a piece of money. — 1839
4. •
   (no longer used, rare) Of or relating to coins or money.