Balan/o
Glans penis (greek balanos, means acorn)
Andr/o
Male
Cry/o
Cold
Cypt/o
Hidden
Epididym/o
Epididymis
Gon/o
Seed
Hydr/o
Water, fluid
Orch/o, orchi/o, orchid/o
Testis, testicle
Pen/o
Penis
Prostat/o
Prostate gland
Semin/i
Semen, seed
Sperm/o, spermat/o
Spermatozoa, semen
Terat/o
Monster
Test/o
Testis, testicle
Varic/o
Varicose veins
Vas/o
Vessel, duct; vas deferens
Zo/o
Zoo life