Tester
nounA person or device that examines, checks, or evaluates something.
How to spell tester
6 letters · 2 syllables
How to pronounce tester
Say the part in capitals loudest.
What does tester mean?
- nounA person or device that examines, checks, or evaluates something.
Tester in a sentence
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The software tester found three bugs before launch.
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Each new battery passes through an automated tester on the line.
Where does tester come from?
Language of origin: Latin
The word tester is built on the English verb 'test', which entered the language through Old French 'test' meaning a small earthen pot used by assayers to test the purity of precious metals. That Old French word came from the Latin 'testum', meaning an earthen vessel or pot, related to 'testa', a tile, shell, or piece of burnt clay. The sense widened from the literal assayer's cup to the general idea of a trial or examination by the 1500s and 1600s. Adding the agent suffix '-er', which marks a person or thing that performs an action, gave 'tester' for someone who tests or a device that tests. The same Latin 'testa' root surprisingly survives in 'testy', and the assaying sense lingers in the word 'test' itself.
How the word is built
- test (try/examine)
- -er (agent suffix: one who or that which does)
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