Any of many substances, such as litmus, used to indicate the concentration of a substance, or the degree of a reaction.
The needle or dial on such a meter.
A plant or animal whose presence is indicative of some specific environment.
A turn signal; each of the flashing lights on each side of a vehicle which indicate a turn is being made to left or right, or a lane change etc.
A pointer or index that indicates something.
A measure, such as unemployment rate, which can be used to predict economic trends.
A bird, the honeyguide.
A meter or gauge.
A cupel or cupelling hearth in which precious metals are melted for trial and refinement.
A session in which a product, piece of equipment, or system is examined under everyday or extreme conditions to evaluate its durability, etc.
An examination, given often during the academic term.
A challenge, trial.
A Test match.
testosterone
Testa; seed coat.
The external calciferous shell, or endoskeleton, of an echinoderm, e.g. sand dollars and sea urchins.
To examine or try, as by the use of some reagent.
To administer or assign an examination, often given during the academic term, to (somebody).
To place a product or piece of equipment under everyday and/or extreme conditions and examine it for its durability, etc.
To refine (gold, silver, etc.) in a test or cupel; to subject to cupellation.
To be shown to be by test.
To put to the proof; to prove the truth, genuineness, or quality of by experiment, or by some principle or standard; to try.
To challenge.