All the qualities constituting one that exists; the essence:
The inherent, unchanging nature of a thing or class of things.
A kind or sort:
A form of dark energy due to a hypothetical scalar field that permeates all space, the energy density of which varies across space and time, in contrast to the cosmological constant.
Significance or importance:
A material layer constituting such a boundary.
Find another word for essentiality. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for essentiality, like: being, essence, nature, quintessence, substance, texture, surface, essentialness and inessentiality.