isidium
[ ahy-sid-ee-uhm ]
noun,plural i·sid·i·a [ahy-sid-ee-uh]. /aɪˈsɪd i ə/. Botany.
a coralloid outgrowth from the thallus in certain lichens.
Origin of isidium
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
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