Word.ws English Dictionary

isidium

isidium noun: a vegetative reproductive structure present in some lichens; an outgrowth of the thallus surface, usually with a columnar structure, and consisting of both fungal hyphae and algal cells.

Noun

isidium (plural isidia)

  1. A vegetative reproductive structure present in some lichens; an outgrowth of the thallus surface, usually with a columnar structure, and consisting of both fungal hyphae and algal cells.

Forms of isidium

pluralisidia

Origin of isidium

According to OED, from a genus name Isidium (Acharius 1798), itself from the goddess Isis.

Words formed from isidium

Questions about isidium

What does isidium mean?
Isidium means a vegetative reproductive structure present in some lichens; an outgrowth of the thallus surface, usually with a columnar structure, and consisting of both fungal hyphae and algal cells.
What part of speech is isidium?
Isidium is a noun.
What is the plural of isidium?
The plural of isidium is isidia.

Words near isidium in the dictionary

  1. isidids
  2. isidiiferous
  3. isidioferous
  4. isidioid
  5. isidiose
  6. isidium
  7. Isidora
  8. Isidoran
  9. Isidoran map
  10. Isidoran maps
  11. Isidore

Source and license

Adapted from Wiktionary: isidium (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “isidium.” Word.ws, https://word.ws/isidium. Based on Wiktionary, CC BY-SA 4.0.