arachnoid.
Relating to or resembling spider webs; covered with or composed of soft loose hairs or fibers.
Meaning & usage
Relating to or resembling spider webs; covered with or composed of soft loose hairs or fibers.
Relating to the arachnoid mater.
Where this word 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.
Ellipsis of arachnoid mater.
A round network of fractures in the crust of Venus.
Where this word 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.
Relating to or resembling spiders.
Where this word comes from
19th century from taxonomic name Arachnida + -oid.
An arachnid.
Where this word comes from
19th century from taxonomic name Arachnida + -oid.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.