arachnology

noun

arach·​nol·​o·​gy ˌa-ˌrak-ˈnä-lə-jē How to pronounce arachnology (audio) ˌer-ˌak- How to pronounce arachnology (audio)
plural -es
: the branch of zoology that deals with spiders and other arachnids
arachnological adjective
arachnological research
There is a glossary of arachnological terms, and the index, although short, is sufficient. Fritz Vollrath, Times Literary Supplement (London), 18 Jan. 1985

Word History

Etymology

International Scientific Vocabulary arachn- + -logy

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

Browse Nearby Words

Cite this Entry

“Arachnology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arachnology. Accessed 27 Dec. 2025.

Love words? Need even more definitions?

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