testis

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tes·tis

 (tĕs′tĭs)
n. pl. tes·tes (-tēz)
1. One of the paired male reproductive organs that produce spermatozoa and male sex hormones in humans and other vertebrates.
2. An analogous gland in an invertebrate animal, such as a flatworm or a mollusk.

[Latin, witness, testis; see testify.]
Word History: The resemblance between testimony, testify, testis, and testicle shows an etymological relationship, but linguists are not agreed on precisely how English testis came to have its current meaning. The Latin testis originally meant "witness," and etymologically means "third (person) standing by": the te- part comes from an older tri-, a combining form of the word for "three," and -stis is a noun derived from the Indo-European root stā- meaning "stand." How this also came to refer to the body part(s) is disputed. An old theory has it that the Romans placed their right hands on their testicles and swore by them before giving testimony in court. Another theory says that the sense of testicle in Latin testis is due to a calque, or loan translation, from Greek. The Greek noun parastatēs means "defender (in law), supporter" (para- "by, alongside," as in paramilitary and -statēs from histanai, "to stand"). In the dual number, used in many languages for naturally occurring, contrasting, or complementary pairs such as hands, eyes, and ears, parastatēs had the technical medical sense "testicles," that is "two glands side by side." The Romans simply took this sense of parastatēs and added it to testis, the Latin word for legal supporter, witness.

testis

(ˈtɛstɪs)
n, pl -tes (-tiːz)
(Anatomy) another word for testicle
[C17: from Latin, literally: witness (to masculinity)]

tes•tis

(ˈtɛs tɪs)

n., pl. -tes (-tēz).
the male gonad, either of two oval reproductive glands located in the scrotum.
[1675–85; < Latin]

tes·tis

(tĕs′tĭs)
Plural testes (tĕs′tēz)
The reproductive organ of male animals, in which sperm and the sex hormones (androgens) are produced. Vertebrates have two testes, which in most animals are contained inside the body. In many mammals, they lie outside the body and are enclosed by the scrotum.

testis

(or testicle; pl. testes) One of a pair of primary male sex organs that manufacture male sex cells (sperm) .
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.testis - one of the two male reproductive glands that produce spermatozoa and secrete androgenstestis - one of the two male reproductive glands that produce spermatozoa and secrete androgens; "she kicked him in the balls and got away"
arteria testicularis, internal spermatic artery, testicular artery - a branch of the aorta supplying the testicles
testicular vein, vena testicularis - a vein from the testicles
male reproductive system - the reproductive system of males
seminiferous tubule - any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature
gonad, sex gland - a gland in which gametes (sex cells) are produced
cobblers - a man's testicles (from Cockney rhyming slang: cobbler's awl rhymes with ball)
male reproductive gland - the reproductive organs of a man
undescended testicle, undescended testis - a testis that fails to move into the scrotum as the male fetus develops; "undescended testicles have an increased risk for cancer"
epididymis - a convoluted tubule in each testis; carries sperm to vas deferens
rete testis - network of tubules carrying sperm from the seminiferous tubules to the vasa efferentia
ductus deferens, vas deferens - a duct that carries spermatozoa from the epididymis to the ejaculatory duct
spermatic cord - a structure resembling a cord that suspends the testis within the scrotum and contains the vas deferens and other vessels and nerves
Translations

testis

[ˈtestɪs] N (testes (pl)) [ˈtestiːz]testículo m, teste m

testis

[ˈtɛstɪs] n (testes (pl)) (frm) → testicolo