English Reference

Word

testes

US/ˈtɛsˌtiz/

UK/tˈɛstiːz/

Definition

n. the two organs in the male body that produce sperm and the hormone testosterone. They are located outside the body in a skin sac called the scrotum.

n. the male reproductive glands that produce sperm and the hormone testosterone. Plural in form; typically used in medical or biological contexts.

Examples

“The doctor examined the testes for any signs of swelling.”

“In many mammals, the testes remain inside the body until the animal reaches sexual maturity.”

“The descent of the testes into the scrotum is a critical developmental milestone, as the lower temperature is necessary for the proper production of viable sperm cells.”

Examples

simple

“The doctor examined the testes for any signs of swelling.”

contextual

“In many mammals, the testes remain inside the body until the animal reaches sexual maturity.”

complex

“The descent of the testes into the scrotum is a critical developmental milestone, as the lower temperature is necessary for the proper production of viable sperm cells.”

Real-World Examples

“Dr Shalender Bhasin Despite being quickly debunked as non-scientific and unrepeatable, the idea of implanting testes – from younger men to older men, from boars and rams – took off.”
The Guardian · 28 Sept 2026
“They saw signs of a reproductive season—for instance, that a male harbor porpoise’s testes weigh more than his brain during the few months of each year that he is fertile.”
Smithsonian Magazine · 14 Aug 2026

This entry

Level
C1 · Advanced
Frequency
Occasional
Updated

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English Reference