noun, noun which may take the genitive case particle 'no'
testicle; testis
Anatomical term; used in medical or biological contexts. In everyday conversation, 睾丸 (こうがん) is more common.
The testis is part of the male reproductive organ.
It is important to detect testicular abnormalities early.
卵巣 is the female organ that produces eggs, while 精巣 is the male organ that produces sperm.
orchitis; inflammation of the testes
cryptorchidism; undescended testicle
cryptorchidism; undescended testis
epididymis
testicular cancer; testicular tumor
testicular torsion
From 精 (せい, 'essence, sperm') and 巣 (そう, 'nest'), referring to the organ that produces sperm.