Meaning of ESSENTIAL in English

ESSENTIAL

adj. & n.

--adj.

1. absolutely necessary; indispensable.

2 fundamental, basic.

3 of or constituting the essence of a person or thing.

4 (of a disease) with no known external stimulus or cause; idiopathic.

--n. (esp. in pl.) a basic or indispensable element or thing.

Phrases and idioms:

essential element any of various elements required by living organisms for normal growth. essential oil a volatile oil derived from a plant etc. with its characteristic odour.

Derivatives:

essentiality n. essentially adv. essentialness n.

Etymology: ME f. LL essentialis (as ESSENCE)

Oxford English vocab.      Оксфордский английский словарь.