Definition of truth set in English:

truth set

noun

Logic
  • 1A set of statements that are components of a given complex statement and are true for a particular assignment of truth values to all the atomic statements under consideration.

  • 2The set of values which make a proposition or set of propositions true whenever its variables take those values.

Origin

1940s; earliest use found in W. V. Quine (1908–2000), philosopher.