arachnoid meaning: definition, etymology

arachnoid

adj

/əˈɹæk.nɔɪd/

Etymology 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.

1

Relating to or resembling spider webs; covered with or composed of soft loose hairs or fibers.

2

Anatomy, Medicine, Sciences Relating to the arachnoid mater.

Derived terms: arachnoid mater, periarachnoid, subarachnoid, superarachnoid

arachnoid

noun

Etymology 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.

1

Anatomy, Medicine, Neuroanatomy, Neurology, Neuroscience, Sciences Abbreviation, Ellipsis Ellipsis of arachnoid mater.

2

Astronomy, Natural sciences A round network of fractures in the crust of Venus.

Derived terms: arachnoidal, arachnoidian, arachnoiditis

arachnoid

adj

Etymology 19th century from taxonomic name Arachnida + -oid.

1

Arachnology, Biology, Natural sciences, Zoology Relational Relating to or resembling spiders.

arachnoid

noun

Etymology 19th century from taxonomic name Arachnida + -oid.

1

An arachnid.