Definition of: tentative

(ten′tə·tiv) adjective
1. Used in making a trial; provisional or conjectural; experimental and subject to change.
2. Med. Based on subjective and objective symptoms: said of a diagnosis subject to change.
—noun An experiment; conjecture. [<Med. L tentativus <L tentatus, pp. of tentare try, probe]
—ten′ta·tive·ly adverb
—ten′ta·tive·ness noun