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1. Oxford American Dictionary

   essential

   • IPA[əˈsen(t)SH(ə)l]

   美式

   • adj.
     absolutely necessary; extremely important；fundamental or central to the nature of something or someone
   • n.
     a thing that is absolutely necessary；the fundamental elements or characteristics of something
2. • 釋義
   • 相關詞

   adj.

   形容詞

   • 1. absolutely necessary; extremely important it is essential to keep up-to-date records fiber is an essential ingredient 同義詞 crucial, necessary, key, vital, indispensable, ... 更多needed, required, called for, requisite, important, all-important, vitally important, of the utmost importance, of great consequence, of the essence, critical, life-and-death, imperative, mandatory, compulsory, obligatory, compelling, urgent, pressing, burning, acute, paramount, preeminent, high-priority, significant, consequential反義詞 inessential, unimportant, optional
   • ▪ fundamental or central to the nature of something or someone the essential weakness of the plaintiff's case 同義詞 basic, inherent, fundamental, quintessential, intrinsic, ... 更多underlying, characteristic, innate, rudimentary, primary, principal, cardinal, chief, elementary, elemental, central, pivotal, critical, key, focal, salient, staple, vital, necessary, indispensable, foundational, ingrained反義詞 secondary
   • ▪ (of an amino acid or fatty acid) required for normal growth but not synthesized in the body and therefore necessary in the diet.
   • 2. (of a disease) with no known external stimulus or cause; idiopathic essential hypertension

   n.

   名詞

   • 1. a thing that is absolutely necessary we had only the bare essentials in the way of gear 同義詞 necessity, necessary/essential item, prerequisite, requisite, requirement, ... 更多need, condition, precondition, specification, stipulation, qualification, desideratum, sine qua non, informalmust反義詞 inessential
   • ▪ the fundamental elements or characteristics of something he was quick to grasp the essentials of an opponent's argument 同義詞 fundamentals, basics, rudiments, principles, first principles, ... 更多foundations, preliminaries, groundwork, essence, basis, core, kernel, nub, marrow, meat, crux, bedrock, facts, hard facts, practicalities, realities, sine qua non, informalnitty-gritty, brass tacks, nuts and bolts, ABC反義詞 minutiae

   non-essential

   • adj.
     not absolutely necessary (tending to be less forceful in meaning than inessential): during the strike non-essential hospital services were halted
   • n.
     a non-essential thing: we have little or no time to spare for non-essentials

   Oxford Dictionary

   essential oil

   • n.
     a natural oil typically obtained by distillation and having the characteristic odour of the ...

   Oxford Dictionary

   essential oil

   • n.
     a natural oil typically obtained by distillation and having the characteristic fragrance of the ...

   Oxford American Dictionary

   essential worker

   • n.
     a worker who fulfills a role regarded as vital for the community, especially in the health, ... I am an essential worker who wears PPE every day the government would be providing packages for essential workers

   Oxford American Dictionary

   essential oil

   • n.
     A volatile oil, usually having the characteristic odor or flavor of the plant from which it is ...

   HOUGHTON MIFFLIN

   essential worker

   • n.
     a worker who fulfils a role regarded as vital for the community, especially in the health, ... I am an essential worker who wears PPE every day the government would be providing packages for essential workers

   Oxford Dictionary

   essential fatty acid

   • n.
     a fatty acid that cannot be synthesized by the body (or not in adequate amounts) and is ... nuts are rich in protein, fibre, and essential fatty acids

   Oxford Dictionary

   essential fatty acid

   • n.
     a fatty acid that cannot be synthesized by the body (or not in adequate amounts) and is ... nuts are rich in protein, fiber, and essential fatty acids

   Oxford American Dictionary

3. • 更多解釋

   essential

   • IPA[ɪˈsɛnʃl]

   英式

   • adj.
     absolutely necessary; extremely important: it is essential to keep up-to-date records fibre is an essential ingredient of our diet
   • n.
     a thing that is absolutely necessary: we only had the bare essentials in the way of equipment

   Oxford Dictionary