(anatomy) A testicle of a vertebrate. / (biology) An analogous gland in invertebrates such as the hydra.

Misspelling of testes.

Easily annoyed, irritable. / Marked by impatience or ill humor.

The state or quality of being testy.

plural of testiness

(anatomy) A hilar testicular network that collects produced sperm from the seminiferous tubules, and connects with the efferent ducts.

(medicine) A testis that is descending to a wrong position after born, or not descending at all (cryptorchidism).