Webster’s Revised Unabridged Dictionary · 1913
Definitive
De·fin′i·tive (dē·fĭn′ĭ·tĭv), a. [L. definitivus: cf. F. définitif.] 1. Determinate; positive; final; conclusive; unconditional; express.
A strict and definitive truth. Sir T. Browne.
Some definitive . . . scheme of reconciliation. Prescott.
2. Limiting; determining; as, a definitive word.
3. Determined; resolved. [Obs.] Shak.
De·fin′i·tive, n. (Gram.) A word used to define or limit the extent of the signification of a common noun, such as the definite article, and some pronouns.
☞ Definitives . . . are commonly called by grammarians articles. . . . They are of two kinds, either those properly and strictly so called, or else pronominal articles, such as this, that, any, other, some, all, no, none, etc. Harris (Hermes).