See Also: tester(1)(dictionary)
tester(2)(dictionary)
tester(dictionary)
tester(dictionary)

tester (iou)



tester noun3. M17.
[from TEST verb2 or noun1 + -ER1.]
A person who or device which tests someone or something. M17.
Biology. A stock or strain of an organism used to investigate some genetic characteristic of another strain. E20.
A device dispensing a trial sample of a product, esp. a cosmetic or perfume. Orig. US. L20.