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isidium

American  
[ahy-sid-ee-uhm] / aɪˈsɪd i əm /

noun

Botany.

plural

isidia

  1. a coralloid outgrowth from the thallus in certain lichens.

Etymology

Origin of isidium

1865–70; < New Latin, derivative of Isid- (stem of Isis ) Isis (from the hornlike appearance of the growth); -ium

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.