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essential

Pronunciation: /ɪˈsɛn.ʃəl/

The English word “essential” has 10 meanings listed here.

adjective

  1. Necessary.
  2. Very important; of high importance.
  3. Necessary for survival but not synthesized by the organism, thus needing to be ingested.
  4. Being in the basic form; showing its essence.
  5. Really existing; existent.
  6. 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.
  7. Idiopathic.
  8. Having the nature of essence; not physical.

noun

  1. A necessary ingredient.
  2. A fundamental ingredient.

Etymology

From Late Latin essentiālis, from Latin essentia (“being, essence”).

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.