tester

1 of 3

noun (1)

test·​er ˈte-stər 

: one that tests or is used for testing

tester

2 of 3

noun (2)

tes·​ter ˈtē-stər  ˈte- 

: the canopy over a bed, pulpit, or altar

tester

3 of 3

noun (3)

tes·​ter ˈte-stər 

: teston sense a

Examples of tester in a Sentence

Recent Examples on the Web

Noun

Almost all testers noted its smooth texture, richness, and thickness as well as its spreadability. —Catherine Jessee, Southern Living, 8 Dec. 2024

The testers evaluating the sleeping devices wore the masks to bed multiple times, rotating every other night in order to compare the quality of sleep. —Cai Cramer, People.com, 6 Dec. 2024

The algorithms that underpin LLMs will by default offer up nasty or potentially harmful output such as racist epithets or instructions for building bombs, and fine-tuning from human testers is typically used to teach them behave better. —Will Knight, WIRED, 4 Dec. 2024

According to our tester, the set’s sound quality was its best feature. —Cheryl Fenton, Parents, 3 Dec. 2024

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

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

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