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actinosts

actinosts is the plural of actinost.

Meaning of actinost

Noun

actinost (plural actinosts)

  1. A bone at the base of a paired fin (of a fish)
    • The second well-developed actinost is below the vertebra supporting the subcaudal blood-vessels, but that is not so strong proximally as the first; the ribs are not directed downwards, but backwards, and are entirely separated from each other.1889, Dr. G. Baur, “On the morphology of ribs and the fate of the actinosts of the median fin in fishes”, in Journal of morphology, volume 3

Questions about actinosts

What is actinosts the plural of?
Actinosts is the plural of actinost.

Words near actinosts in the dictionary

  1. actinostolid
  2. actinostolids
  3. actinostomal
  4. actinostome
  5. actinostomes
  6. actinosts
  7. actinote
  8. actinotes
  9. actinotherapeutic
  10. actinotherapeutics
  11. actinotherapy

Source and license

Adapted from Wiktionary: actinosts (page history and authors); actinost (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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