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Definition of testis

testis

/ˈtɛs.tɪs/
tes · tis
Plural:testes
•
Adjective:testicular
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testis Lexical Profile

testis Game Scores & Validity

• noun

1

Either of the two oval reproductive organs in male vertebrates that produce spermatozoa and male sex hormones such as testosterone, typically enclosed in the scrotum in mammals.

Example

"During fetal development, each testis normally descends from the abdominal cavity into the scrotum before birth."

Synonyms
View all synonyms for testis

Word Nuance & Usage

"Testis" (plural "testes") is the formal anatomical and medical term, whereas "testicle" (plural "testicles") is preferred in everyday and general clinical conversation.

• Rhymes for testis

• Nearby Words

testimony
testiness
testing
testis
testosterone
testy
tet

Word Origin & Etymology

Borrowed in the late 17th century from Latin testis, meaning "witness" and also "testicle" (perhaps as a witness of virility, or a calque of Greek parastatēs, meaning "supporter" or "defender").

Cite this Entry

Wordmom. (2026). Definition of Testis. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/testis
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