essential
IPA: ɪsˈɛnʃʌɫ
noun
- A necessary ingredient.
- A fundamental ingredient.
adjective
- Necessary.
- Very important; of high importance.
- (biology) Necessary for survival but not synthesized by the organism, thus needing to be ingested.
- Being in the basic form; showing its essence.
- Really existing; existent.
- (geometry) Such that each complementary region is irreducible, the boundary of each complementary region is incompressible by disks and monogons in the complementary region, and no leaf is a sphere or a torus bounding a solid torus in the manifold.
- (medicine) Idiopathic.
- Having the nature of essence; not physical.
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Examples of "essential" in Sentences
- The defense of the coast was essential.
- The essentialness of the crime was sin.
- Devotion is essential to a relationship.
- The mathematics is essentially the same.
- The effects of the lattice are essential.
- The counselling of the practitioner is essential.
- The ethnocentrism is manifest, as is the essentialism.
- It is not essential to the understanding of the articles.
- The Main Page is essentially an advert for the rest of the encyclopedia.
- It has essentially no industry, the main employer is a large convalescence home.
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