What is the meaning of integral?

noun

• The result of a mathematical integration; F(x) is the integral of f(x. if dF/dx = f(x))

adjective

• Existing as an essential constituent or characteristic.
  • usage: "the Ptolemaic system with its built-in concept of periodicity"; "a constitutional inability to tell the truth"
  • synonyms: built-in, constitutional, inbuilt, inherent
• Constituting the undiminished entirety; lacking nothing essential especially not damaged.
  • usage: "a local motion keepeth bodies integral- Bacon; "was able to keep the collection entire during his lifetime"; "fought to keep the union intact"
  • synonyms: entire, intact
• Of or denoted by an integer. .