I . n.
1.
Experiment, trial, proof, ordeal.
2.
Criterion, standard, touchstone.
3.
Proof, exhibition, example.
4.
Discriminative characteristic, ground of admission or exclusion.
5.
Judgment, distinction, discrimination.
6.
( Chem. ) Reagent.
II . v. a.
1.
Try, prove, subject to trial, put to the proof, experiment upon, make trial of, make an experiment with, give a trial to.
2.
Assay.