Join free

arachnoid

English

AI In plain words

Writing a short explanation…

Written by a house AI from the entry below, in your language. The entry itself is the source.

arachnoid¹

  • /əˈɹæk.nɔɪd/

Rhymes with -æknɔɪd

Where it comes from

Mid 18th century borrowing from New Latin arachnoīdēs, from Ancient Greek ᾰ̓ρᾰχνοειδής (ărăkhnoeidḗs, “like a cobweb”), from ᾰ̓ρᾰ́χνη (ărắkhnē, “spider web”) + -ο- (-o-) + -ειδής (-eidḗs, “-oid, -like”). By surface analysis, arachn- + -oid.

adjective

  1. not comparable Relating to or resembling spider webs; covered with or composed of soft loose hairs or fibers.
  2. not comparable Relating to the arachnoid mater.

noun arachnoids

  1. abbreviation, ellipsis Ellipsis of arachnoid mater
  2. A round network of fractures in the crust of Venus.

arachnoid²

  • /əˈɹæk.nɔɪd/

Rhymes with -æknɔɪd

Where it comes from

19th century from taxonomic name Arachnida + -oid.

adjective

  1. not comparable, relational Relating to or resembling spiders.

noun arachnoids

  1. An arachnid.

Translations

Every language

adj relating to or resembling spider webs

中文蛛網的 /蛛网的 zhūwǎng de

adj relating to the arachnoid mater

中文蛛網膜的 /蛛网膜的 zhūwǎngmó de

Talk about this word

Cite this
MLA

"arachnoid." Wiktionary, via Micwyn, micwyn.com/word/arachnoid. Accessed 6 Nov. 2026.

APA

arachnoid. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/arachnoid

Chicago

"arachnoid." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/arachnoid.

BibTeX
@misc{arachnoid_2026,
  title = {arachnoid},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/arachnoid},
  urldate = {2026-11-06}
}