mesofauna

noun

meso·​fauna
"+
: very small invertebrate animals (such as mites, nematodes, or centipedes) that are usually .1 mm to 2 mm (.004 to .08 inch) in length

Note: The terms macrofauna , mesofauna, and microfauna are used especially in describing those organisms living in or on soil or benthic sediment.

compare meiofauna
mesofaunal adjective
mesofaunal composition

Word History

Etymology

New Latin, from mes- + fauna

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

  1. Expanded definitions
  2. Detailed etymologies
  3. Advanced search tools
  4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Dictionary Entries Near mesofauna

Cite this Entry

“Mesofauna.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mesofauna. Accessed 21 Dec. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!