Definition of Modiola in US English:

Modiola

noun

  • 1Zoology and Geology. A former genus of horse mussels (now called Modiolus); (also in form modiola) a horse mussel of this genus. Compare "modiolus". Now rare.

  • 2Botany. A small genus of plants of the family Malvaceae, native to warmer parts of North America; a plant of this genus.

Origin

Early 19th century. From scientific Latin Modiola, genus name from classical Latin modiolus + -a.