Definition of Essential

N
essential qualities (pl.)

necessarius

(a.)
Necessary; indispensable; -- said of those tones which constitute a chord, in distinction from ornamental or passing tones.
  

(a.)
Important in the highest degree; indispensable to the attainment of an object; indispensably necessary.
  

(a.)
Idiopathic; independent of other diseases.
  

(a.)
Hence, really existing; existent.
  

(a.)
Containing the essence or characteristic portion of a substance, as of a plant; highly rectified; pure; hence, unmixed; as, an essential oil.
  

(a.)
Belonging to the essence, or that which makes an object, or class of objects, what it is.
  

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 essential oils 
 essential salt 
 essential fever 
 essential disease 
 essential character 

En = n. a living principle; a being; a spirit, a. essential

Enain = a. essential, pure

Hanfodol = a. existent; essential

Llud = n. pure ore, wealth = a. close, compact, essential

Myr = a. essential; pure; holy, n. the sea; emmets

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Noun
1. anything indispensable; "food and shelter are necessities of life"; "the essentials of the good life"; "allow farmers to buy their requirements under favorable conditions"; "a place where the requisites of water fuel and fodder can be obtained"
(synonym) necessity, requirement, requisite, necessary
(antonym) inessential, nonessential
(hypernym) thing
(hyponym) desideratum

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Adjective
1. absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker"
(synonym) indispensable
(similar) necessary
2. basic and fundamental; "the essential feature"
(antonym) inessential, unessential
(similar) basal, basic, primary
(see-also) crucial, important
(attribute) essentiality, essentialness
3. of the greatest importance; "the all-important subject of disarmament"; "crucial information"; "in chess cool nerves are of the essence"
(synonym) all-important(a), all important(p), crucial, of the essence(p)
(similar) important, of import
4. being or relating to or containing the essence of a plant etc; "essential oil"
(pertainym) essence
5. applying to essential legal principles and rules of right; "substantive law"
(synonym) substantive
(classification) law, jurisprudence
6. absolutely required and not to be used up or sacrificed
(similar) unexpendable

Essential

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bolaya-, bolayatik

v. 'ut

As in essential hypertension. A hallowed term meaning "We don't know the cause." Synonymous with idiopathic.

Can not be manufactured by the body