the.com/essential
The stuff that, if removed, makes the whole thing stop being itself.
means Absolutely necessary or fundamental — the part you cannot subtract without breaking what something is.
from From Latin essentia, the very being of a thing, born from esse, to be — so essential literally means belonging to a thing's existence.
Oily relativeEssential oils are essence-bearing, not biologically necessary.
Pandemic promotion2020 made grocery clerks officially essential workers.
Philosophy splitEssence opposes accident, the traits a thing could lose.