noun, plural tes·tes [tes-teez] /ˈtɛs tiz/. Anatomy, Zoology.
Origin of testis
Examples from the Web for testis
The testis is single, and its duct opens into the intestine and is provided with two chitinous spicules.
In reptiles and birds they are long lobulated bodies lying close to the testis or ovary and receiving an adrenal portal vein.
In Birds a connection between the Wolffian body and the testis appears to be established as in the other types.The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour
In the rhabdocoela the sexual organs appear in their simplest forms—a testis anterior to a single or double ovary.Religion and Lust|James Weir
The gonad is the part most affected; so much so that most authors have interpreted it as testis.The Organism as a Whole|Jacques Loeb