Word.ws English Dictionary

acritarch

/ˈækɹɪtɑː(ɹ)k/

acritarch noun: any small, non-acid-soluble (i.e. non-carbonate, non-siliceous) organic fossil that cannot be classified.

Noun

acritarch (plural acritarchs)

  1. Any small, non-acid-soluble (i.e. non-carbonate, non-siliceous) organic fossil that cannot be classified.
    • Acritarchs represent some of the earliest evidence of life on Earth.2018, Mark Carnall, “Unidentifiable fossils: palaeontological problematica”, in The Guardian

Forms of acritarch

pluralacritarchs

Origin of acritarch

From Ancient Greek ἄκριτος (ákritos, “doubtful, indistinguishable”) + ἀρχή (arkhḗ, “beginning, origin”).

Questions about acritarch

What does acritarch mean?
Acritarch means any small, non-acid-soluble (i.e. non-carbonate, non-siliceous) organic fossil that cannot be classified.
What part of speech is acritarch?
Acritarch is a noun.
How do you pronounce acritarch?
Acritarch is pronounced /ˈækɹɪtɑː(ɹ)k/.
What is the plural of acritarch?
The plural of acritarch is acritarchs.

Words near acritarch in the dictionary

  1. ACRISS
  2. acrisy
  3. Acrita
  4. acritan
  5. acritans
  6. acritarch
  7. acritarchs
  8. acrite
  9. acritical
  10. acritically
  11. acritochromacy

Source and license

Adapted from Wiktionary: acritarch (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.

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