Ge·​as·​trum | \ jēˈastrəm \

Definition of Geastrum

: a genus (the type of the family Geastraceae) of basidiomycetous fungi having the outer peridium when dry splitting into starlike segments — compare earthstar

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History and Etymology for Geastrum

New Latin, from ge- + -astrum (from Greek astēr star)

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Cite this Entry

“Geastrum.” Dictionary, Merriam-Webster, Accessed 25 Sep. 2020.

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