- the male gonad or reproductive gland, either of two oval glands located in the scrotum.
Origin of testis
Examples from the Web for testis
The outer coat of the testis is called the tunica albuginea.The Biology, Physiology and Sociology of Reproduction
Winfield S. Hall
The testis of the male lies in the thorax, just below the heart.The Life of Crustacea
William Thomas Calman
Spermatozoa originate in the testis as cells, which are filled with granules.Plain Facts for Old and Young
John Harvey Kellogg
The number of segmental tubes connected with the testis varies very greatly.
In the case of Reptilia the anterior two or three segmental tubes in the region of the testis probably have this function.
- another word for testicle
Word Origin and History for testis
(plural testes), 1704, from Latin testis "testicle," usually regarded as a special application of testis "witness" (see testament), presumably because it "bears witness" to virility (cf. Greek parastates, literally "one that stands by;" and French slang témoins, literally "witnesses"). But Buck thinks Greek parastatai "testicles" has been wrongly associated with the legal sense of parastates "supporter, defender" and suggests instead parastatai in the sense of twin "supporting pillars, props of a mast," etc. Walde, meanwhile, suggests a connection between testis and testa "pot, shell, etc."
- The male reproductive gland, the source of spermatozoa and the androgens, normally occurring paired in an external scrotum.didymus orchis
- The primary reproductive organ of male animals, in which sperm and the male sex hormones (androgens) are produced. In most vertebrates, the testes are contained inside the body. In many mammals, however, the testes are enclosed in an external scrotum.