Definition of basidium in English:



  • A microscopic, club-shaped spore-bearing structure produced by certain fungi.

    • ‘These mated cells can grow in filamentous form with meiosis occurring at the terminal cell (basidium) of the hyphae.’
    • ‘Under continuous light, the maturation starts but stops halfway: meiosis in the basidia is arrested at prophase I, the stipe elongates only slightly, and the pileus does not expand.’
    • ‘After a few more days of incubation, the ends of some mycelia may enlarge and form basidia within which nuclear fusion and meiosis may occur.’
    • ‘The teliospores borne in these telia germinate to produce a basidium, which in turn produces basidiospores.’
    • ‘Most importantly, monokaryotic hyphae can produce basidia and spores that are indistinguishable from sexually produced spores, except that they are all the same mating type.’


Mid 19th century: modern Latin, from Greek basidion, diminutive of basis (see basis).