noun, masculine/feminine

arachnologiste

/a.ʁak.nɔ.lɔ.ʒist/

noun, masculine/feminine/a.ʁak.nɔ.lɔ.ʒist/plural: arachnologistes

arachnologiste is masculine or feminine depending on context in French.

arachnologist

From arachnologie + -iste.