tester

1 of 4

noun (1)

test·​er ˈte-stər 

: one that tests or is used for testing

tester

2 of 4

noun (2)

tes·​ter ˈtē-stər  ˈte- 

: the canopy over a bed, pulpit, or altar

tester

3 of 4

noun (3)

tes·​ter ˈte-stər 

: teston sense a

teston

4 of 4

noun (4)

tes·​ton ˈte-ˌstän 

variants or testoon

te-ˈstün 

or less commonly tester

ˈte-stər 

: any of several old European coins: such as

a

: a shilling of Henry VIII of England decreasing in value to ninepence and then to sixpence in Shakespeare's time

b

: a French silver coin of the 16th century worth between 10 and 14½ sous

Examples of tester in a Sentence

Recent Examples on the Web

Noun

Why Direct Engineer-User Is Essential ​ One of our team's most impactful operational shifts has been having our engineers interact directly with users and testers. — Laila Burns, Forbes.com, 21 July 2026

For this review, our tester focused on the iron’s steam output, self-cleaning feature and precision tip. — Bestreviews, Mercury News, 21 July 2026

Tadej Pogacar and Jonas Vingegaard were woken up by drug testers in the middle of the night ahead of Sunday’s crucial mountain stage to Plateau de Solaison. — Jacob Whitehead, New York Times, 19 July 2026

Great Value Bread & Butter Chips Walmart’s Great Value brand of bread and butter pickle chips was not chosen by any testers as their overall favorite and its overall rating fell towards the bottom of the group. — Jenna Sims, Southern Living, 17 July 2026

Word History

Etymology

Noun (2)

Middle English, headboard of a bed, canopy, from Anglo-French, from teste head, from Late Latin testa skull, from Latin, shell

Noun (3)

modification of Middle French testart, from teston

Noun (4)

Middle French, from Old Italian testone, augmentative of testa head, from Late Latin, skull — more at tester entry 2

First Known Use

Noun (1)

1661, in the meaning defined above

Noun (2)

14th century, in the meaning defined above

Noun (3)

1546, in the meaning defined above

Noun (4)

1536, in the meaning defined above

Rhymes for tester

• ester
• esther
• fester
• jester
• nester
• nestor
• pester
• prester
• quaestor
• wester
• yester
• ancestor

Kids Definition

tester

1 of 2 noun

tes·​ter ˈtēs-tər  ˈtes- 

: a canopy or a frame for a canopy over a bed, pulpit, or altar

tester

2 of 2 noun

test·​er

ˈtes-tər

: one that tests