1. The body of real things, events, and facts.
  2. The state of being the case.
  3. A transcendent fundamental or spiritual reality.
  4. A judgment, proposition, or idea that is true or accepted as true.
  5. The body of true statements and propositions.
  6. The property (as of a statement) of being in accord with fact or reality.
  7. Fidelity to an original or to a standard.
  8. Sincerity in action, character, and utterance.

The emotion of Truth is found in the Governing meridian.

Definition from Dictionary by Merriam-Webster.