explorative

from WordNet (r) 3.0 (2006)

explorative
    adj 1: serving in or intended for exploration or discovery; "an
           exploratory operation"; "exploratory reconnaissance";
           "digging an exploratory well in the Gulf of Mexico";
           "exploratory talks between diplomats" [syn:
           {exploratory}, {explorative}] [ant: {nonexplorative},
           {nonexploratory}, {unexplorative}, {unexploratory}]

from The Collaborative International Dictionary of English v.0.48

Explorative \Ex*plor"a*tive\, a.
   Exploratory.
   [1913 Webster]