\Ab"la*tive\, a. [F. ablatif, ablative, L. ablativus
fr. ablatus. See {Ablation}.]
1. Taking away or removing. [Obs.]
         Where the heart is forestalled with misopinion,
         ablative directions are found needful to unteach
         error, ere we can learn truth.        --Bp. Hall.
2. (Gram.) Applied to one of the cases of the noun in Latin
   and some other languages, -- the fundamental meaning of
   the case being removal, separation, or taking away.

\Ab"la*tive\, (Gram.)
The ablative case.
{ablative absolute}, a construction in Latin, in which a noun
   in the ablative case has a participle (either expressed or
   implied), agreeing with it in gender, number, and case,
   both words forming a clause by themselves and being
   unconnected, grammatically, with the rest of the sentence;
   as, Tarquinio regnante, Pythagoras venit, i. e.,
   Tarquinius reigning, Pythagoras came.