Where does “truffle oil” come from?

truffle oil (English) comes from English oil, from Middle English oyle, from Old French oile, from Latin oleum, from Ancient Greek ἔλαιον, from Ancient Greek ἐλαία, from Proto-Hellenic elaíwā, from Proto-Indo-European loiwom.

truffle oil (English): A cooking ingredient consisting of flavorless oil...

Definitions

  1. A cooking ingredient consisting of flavorless oil...

Ancestry of “truffle oil”, step by step

truffle oil traces back through two separate lines of ancestry.

via English oil

StepLanguageWordMeaning
1EnglishoilLiquid fat; Petroleum-based liquid used as fuel...
2Middle EnglishoyleThe oil pressed from olives; olive oil; Oil as...
3Old Frenchoileoil
4Latinoleumolive oil; the palaestra
5Ancient Greekἔλαιονolive oil, commonly used as an anointing oil; any...
6Ancient Greekἐλαίαolive tree; olive; naevus
7Proto-Hellenicelaíwā
8Proto-Indo-Europeanloiwom

via English truffle

StepLanguageWordMeaning
1EnglishtruffleAny of various edible fungi, of the genus Tuber,...
2Old Frenchtruflemockery
3Occitantrufa
4Vulgar Latintufera
5Latintūbera hump, bump, swelling, protuberance; excrescence
6Proto-Italictūβos
7Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong
Every word from Proto-Indo-European loiwomEvery word from Proto-Hellenic elaíwāEvery word from Ancient Greek ἐλαία