discoidal

/dɪˈskɔɪdəl/
adjective
  1. Shaped like a disk; flat and round.
    • The ancient coins were discoidal and made of gold.
    • The UFO was described as discoidal, with a smooth metallic surface.
    • The scientist examined a discoidal fossil under the microscope.
Antonyms
What does "discoidal" mean? | whatsthatwordmean | whatsthatwordmean