(psychology) A method of psychological evaluation that uses a person's interpretations of inkblots or similar images to discover information concerning his or her personality, emotional functioning, or unconscious mind.

(statistics) Ellipsis of Student's t test.

(statistics) Any statistical hypothesis test in which the test statistic has a Student's t-distribution if the null hypothesis is true.

(statistics) Ellipsis of Student's t-test.

(advertising) A method of advertising research measuring the percentage of people who remember seeing an advertisement the day after it was shown on television.

(advertising) A method of market research that predicts in-market performance of an advertisement before it airs.

Any test done as practice, before an official test.

(law) of or pertaining to a will or testament

(idiomatic) To explore or probe, as before making a commitment.

(statistics) A technique used to estimate the reliability or consistency of some measurement by correlating the results of multiple measurements, spread over time.