orchid/o, orchi/o, orch/o
testis, testicle
sperm/o, spermat/o
sperm, spermatozoon
vesicul/o
seminal vesicle(s)
arche/o
first, beginning
prostat/o
prostate gland
vas/o
vessel, duct (vas deferens in terms describing the male reproductive system)
-ism
state of
andr/o
male
epididym/o
epididymis
balan/o
glans penis