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1. Constituting or being part of the nature or essence of something; inherent: "In that era of general good will ... few Americans doubted the essential goodness of their society" (David Halberstam).
2. Fundamentally important or necessary: essential ingredients. See Synonyms at indispensable.
3. Medicine Of, relating to, or being a condition or a disease whose cause is unknown: essential hypertension.
4. Biochemistry Being a substance that is required for normal functioning but cannot be synthesized by the body and therefore must be included in the diet: essential amino acids.
1. Something fundamental.
2. Something necessary or indispensable.

es·sen′ti·al′i·ty (-shē-ăl′ĭ-tē), es·sen′tial·ness n.
es·sen′tial·ly adv.


(əˌsɛn ʃiˈæl ɪ ti)

n., pl. -ties.
1. the quality of being essential; essential character.
2. an essential feature, element, or point.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.essentiality - basic importance
importance - the quality of being important and worthy of note; "the importance of a well-balanced diet"
vitalness - the quality of being essential to maintain life
indispensability, indispensableness, vitalness - the quality possessed by something that you cannot possibly do without
inessentiality - not of basic importance


A basic trait or set of traits that define and establish the character of something:
References in classic literature ?
Without supposing the personal essentiality of the man, it is evident that a change of the chief magistrate, at the breaking out of a war, or at any similar crisis, for another, even of equal merit, would at all times be detrimental to the community, inasmuch as it would substitute inexperience to experience, and would tend to unhinge and set afloat the already settled train of the administration.
While discussing, very much at random, the essentiality of what we call Poetry, my principal purpose will be to cite for consideration, some few of those minor English or American poems which best suit my own taste, or which, upon my own fancy, have left the most definite impression.
Contenting myself with the certainty that Music, in its various modes of metre, rhythm, and rhyme, is of so vast a moment in Poetry as never to be wisely rejected -- is so vitally important an adjunct, that he is simply silly who declines its assistance, I will not now pause to maintain its absolute essentiality.
It has less extensive tables and less on the discovery of essentiality or beneficial action.
Microsoft has a utilitarian essentiality, not the kind of emotional essentiality that Apple relies on," she added, quoted by The Drum.
The Task Force had recommended that the price regulation should be on the basis of essentiality of the drugs and it should be applied only for formulations and not to upstream products such as bulk drugs.