basidium

noun

ba·​sid·​i·​um bə-ˈsi-dē-əm How to pronounce basidium (audio)
plural basidia bə-ˈsi-dē-ə How to pronounce basidium (audio)
: a structure on a basidiomycete in which karyogamy occurs followed by meiosis to form usually four basidiospores

Word History

Etymology

New Latin, from Latin basis

First Known Use

circa 1839, in the meaning defined above

Time Traveler
The first known use of basidium was circa 1839

Browse Nearby Words

Cite this Entry

“Basidium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/basidium. Accessed 3 Jul. 2026.

Medical Definition

basidium

noun
ba·​sid·​i·​um bə-ˈsid-ē-əm How to pronounce basidium (audio)
plural basidia -ē-ə How to pronounce basidium (audio)
: a structure on a basidiomycete in which karyogamy occurs followed by meiosis to form usually four basidiospores

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