exploratory (adj.)

mid-15c., "intended for exploration or scouting," from Latin exploratorius "belonging to scouts," from explorator "scout," from explorare "investigate, examine" (see explore). Alternative explorative is from 1738; explorational is from 1889.

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Definitions of exploratory from WordNet

exploratory (adj.)
serving in or intended for exploration or discovery;
exploratory talks between diplomats
digging an exploratory well in the Gulf of Mexico
an exploratory operation
exploratory reconnaissance
Synonyms: explorative