Definition of folium in English:

folium

noun

technical
  • A thin leaflike structure, e.g., in some rocks or in the cerebellum of the brain.

    folia
    • ‘This folium was first discussed by Descartes in 1638.’
    • ‘The Latin stem for these words is folium, a neuter noun meaning leaf.’
    • ‘Immediately above the lingula, four or five folia constitute the central lobule of the vermis, which is continuous laterally with the ala of the central lobule.’
    • ‘In case 3, however, we noted Purkinje neuronal drop-out, gliosis, and proliferation of microglial nodules in the cerebellar folia.’
    • ‘After that, Zhuang carves out seven leaves from the folium.’

Origin

Mid 18th century: from Latin, literally leaf.

Pronunciation:

folium

/ˈfōlēəm/