essential

es·sen·tial

E0217100 (ĭ-sĕn′shəl)adj.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.n.1. Something fundamental.2. Something necessary or indispensable.

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

essential

(ɪˈsɛnʃəl) adj1. vitally important; absolutely necessary2. basic; fundamental: the essential feature. 3. completely realized; absolute; perfect: essential beauty. 4. (Biochemistry) biochem (of an amino acid or a fatty acid) necessary for the normal growth of an organism but not synthesized by the organism and therefore required in the diet5. (Botany) derived from or relating to an extract of a plant, drug, etc: an essential oil. 6. (Logic) logic (of a property) guaranteed by the identity of the subject; necessary. Thus, if having the atomic number 79 is an essential property of gold, nothing can be gold unless it has that atomic number7. (Music, other) music denoting or relating to a note that belongs to the fundamental harmony of a chord or piece8. (Pathology) pathol (of a disease) having no obvious external cause: essential hypertension. 9. (Geological Science) geology (of a mineral constituent of a rock) necessary for defining the classification of a rock. Its absence alters the rock's name and classificationn10. something fundamental or indispensable: a sharp eye is an essential for a printer. 11. (Music, other) music an essential note essentiality, esˈsentialness n

es•sen•tial

(əˈsɛn ʃəl)

adj. 1. absolutely necessary; indispensable. 2. pertaining to or constituting the essence of a thing. 3. noting or containing an essence of a plant, drug, etc. 4. being such by its very nature or in the highest sense; natural; spontaneous: essential happiness. 5. not associated with an underlying disease: essential hypertension. n. 6. a basic, indispensable, or necessary element; chief point. [1300–50; Middle English essencial < Medieval Latin essenciālis, for Late Latin essentiālis] es•sen′tial•ly, adv. es•sen′tial•ness, n. syn: essential, inherent, intrinsic refer to that which is in the natural composition of a thing. essential suggests that which is in the very essence or constitution of a thing: Quiet is essential in a public library. inherent means inborn or fixed from the beginning as a permanent quality or constituent of a thing: properties inherent in iron. intrinsic implies belonging to the nature of a thing itself and comprised within it, without regard to external considerations or accidentally added properties: the intrinsic value of diamonds. See also necessary.

Thesaurus

Noun	1.	essential - 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"necessary, requisite, necessity, requirementthing - a separate and self-contained entitydesideratum - something desired as a necessity; "the desiderata for a vacation are time and money"must - a necessary or essential thing; "seat belts are an absolute must"need, want - anything that is necessary but lacking; "he had sufficient means to meet his simple needs"; "I tried to supply his wants"inessential, nonessential - anything that is not essential; "they discarded all their inessentials"
Adj.	1.	essential - absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker"indispensablenecessary - absolutely essential
	2.	essential - basic and fundamental; "the essential feature"crucial, important - of extreme importance; vital to the resolution of a crisis; "a crucial moment in his career"; "a crucial election"; "a crucial issue for women"indispensable - not to be dispensed with; essential; "foods indispensable to good nutrition"unexpendable - not suitable to be expendedimportant, of import - of great significance or value; "important people"; "the important questions of the day"intrinsic, intrinsical - belonging to a thing by its very nature; "form was treated as something intrinsic, as the very essence of the thing"- John Deweynecessary - absolutely essentialprimary - of first rank or importance or value; direct and immediate rather than secondary; "primary goals"; "a primary effect"; "primary sources"; "a primary interest"inessential, unessential - not basic or fundamental
	3.	essential - of the greatest importance; "the all-important subject of disarmament"; "crucial information"; "in chess cool nerves are of the essence"all important, all-important, of the essence, crucialimportant, of import - of great significance or value; "important people"; "the important questions of the day"
	4.	essential - being or relating to or containing the essence of a plant etc; "essential oil"
	5.	essential - defining rights and duties as opposed to giving the rules by which rights and duties are established; "substantive law"substantivelaw, jurisprudence - the collection of rules imposed by authority; "civilization presupposes respect for the law"; "the great problem for jurisprudence to allow freedom while enforcing order"

essential

adjective1. vital, important, needed, necessary, critical, crucial, key, indispensable, requisite, vitally important It is absolutely essential that we find this man quickly.
vital unnecessary, trivial, unimportant, inessential2. fundamental, main, basic, radical, key, principal, constitutional, cardinal, inherent, elementary, innate, intrinsic, elemental, immanent Two essential elements must be proven: motive and opportunity.
fundamental extra, secondary, surplus, accessory, lesser, optional, incidental, superfluous, extraneous, expendable, dispensable, nonessential3. concentrated, extracted, refined, volatile, rectified, distilled essential oils used in aromatherapynoun1. prerequisite, principle, fundamental, necessity, must, basic, requisite, vital part, sine qua non (Latin), rudiment the essentials of everyday life, such as food and water

essential

adjective1. Constituting or forming part of the essence of something:basic, constitutional, constitutive, fundamental, integral, vital.2. Of or being an irreducible element:basic, elemental, elementary, fundamental, primitive, ultimate, underlying.3. Incapable of being dispensed with:indispensable, necessary, needful, required, requisite.noun1. A fundamental irreducible constituent of a whole:basic, element, fundamental, rudiment (often used in plural).Idiom: part and parcel.2. Something indispensable:condition, must, necessity, need, precondition, prerequisite, requirement, requisite, sine qua non.

Translations

基本的必要的必需品根本的

essential

(iˈsenʃəl) adjective absolutely necessary. Strong boots are essential for mountaineering; It is essential that you arrive punctually. 必要的 根本的，基本的 noun a thing that is fundamental or necessary. Everyone should learn the essentials of first aid; Is a television set an essential? 必需品 必需品esˈsentially adverb basically. She is an essentially selfish person. 基本上 基本上

essential

→ 必要的zhCN