A device used for testing.
A sample of perfume available in a shop for customers to try before they buy.
Other Word Forms of Tester
Origin of Tester
For testern, teston, from French teston, from Old French teste the head, the head of the king being impressed upon the coin. See tester a covering, and compare testone, testoon.
Middle English from Medieval Latin testrum from Late Latin testa skull from Latin shell
From American Heritage Dictionary of the English Language, 5th Edition
Probably from Old French testre, from Latin testa.
From test +"Ž -er.
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