essential

  1. Noun.  A necessary ingredient.
  2. Noun.  A fundamental ingredient.
  3. Adjective.  Necessary.
  4. Adjective.  Very important; of high importance.
  5. Adjective.  Being in the basic form; showing its essence.
  6. Adjective.  (context, of a lamination of a 3-manifold) 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. Adjective.  (medicine) Idiopathic.

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This entry was last updated on RefTopia from its source on 3/20/2012.