IPA: /ɪkˈspɛlə/
KK: /ɪkˈspɛlər/
A device or machine that removes oil from seeds or other materials, often used in the production of cooking oil.
The expeller efficiently extracted oil from the sunflower seeds.
Expeller → It is formed from "ex-" (meaning out) and "pellere" (meaning to drive). The word "expeller" refers to something that drives out or forces something to leave.
Think of something that drives something 'out' ('ex-') — that's why an expeller is something that forces something to leave.