arachnoides

Latin

Etymology

Borrowing from Ancient Greek ᾰ̓ρᾰχνοειδής (arakhnoeidḗs, “like a cobweb”), from ᾰ̓ρᾰ́χνη (arákhnē, “spider web”) +‎ -ο- (-o-) +‎ -ειδής (-eidḗs, “-oid, -like”).

Pronunciation

• (Classical) IPA^(key): /a.rakʰ.noˈiː.deːs/, [äräkʰnoˈiːd̪eːs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /a.rak.noˈi.des/, [äräknoˈiːd̪es]

Adjective

arachnoīdēs (neuter arachnoīdes or arachnoīdēs); third-declension one-termination adjective (Greek-type) (New Latin)

1. resembling a spider web

Inflection

Third-declension one-termination adjective (Greek-type).

Number	Singular			Plural
Case / Gender	Masc./Fem.	Neuter		Masc./Fem.	Neuter
Nominative	arachnoīdēs	arachnoīdes1 arachnoīdēs		arachnoīdēs	arachnoīdia
Genitive	arachnoīdis			arachnoīdium
Dative	arachnoīdī			arachnoīdibus
Accusative	arachnoīdem	arachnoīdes1 arachnoīdēs		arachnoīdēs	arachnoīdia
Ablative	arachnoīdī			arachnoīdibus
Vocative	arachnoīdes1 arachnoīdēs			arachnoīdēs	arachnoīdia

¹It is unknown if Classical Latin preserved (or would have preserved) the shortness of the original Greek short ending.

Descendants

• → English: arachnoid