Definition of "definite"

definite

/ˈdɛfɪnɪt/

adjective
comparative more definite, superlative most definite
1. Having distinct limits.
  Quotations
  […] elements combine in definite proportions […]
  1837, William Whewell, chapter 8, in History of the Inductive Sciences‎, volume 3, book 14, London: John W. Parker, page 145
2. Free from any doubt.
3. Determined; resolved; decided.
  Quotations
  […] idiots in this case of favour wouldBe wisely definite
  1611 April (first recorded performance), William Shakespeare, “The Tragedie of Cymbeline”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act I, scene vi]
4. (linguistics) Designating an identified or immediately identifiable person or thing, or group of persons or things
noun
plural definites
1. (grammar) A word or phrase that designates a specified or identified person or entity.
2. (obsolete) Anything that is defined or determined.