Male

A person or animal of the sex that typically produces sperm or other small gametes. In species with separate sexes, males are defined by producing the smaller gametes.

Gamete: A reproductive cell that fuses with another cell during sexual reproduction. Male sex is defined in many species by producing one class of gametes.
Spermatogenesis: The process by which germ cells develop into sperm. It is the production pathway for male gametes in many animals.
Female: A person or animal of the sex that typically produces eggs or other large gametes. In anisogamous species with separate sexes, female denotes the larger-gamete role.
Male reproductive system: The organs and structures involved in producing and transporting male gametes and reproductive fluids. It describes the anatomy commonly associated with human male reproduction.
Anisogamy: A reproductive system in which fusing gametes differ in size or form. Its smaller-gamete criterion underlies the biological distinction between male and female.
Testis: An organ that produces sperm and, in many animals, sex hormones. Testes are the principal sperm-producing organs in many male animals.
Intersex: A range of innate variations in sex characteristics that do not fit typical definitions of male or female bodies. Intersex variations show that sex traits do not always align with typical male classifications.
Male infertility: A reduced ability to cause pregnancy due to factors affecting sperm production, function, or delivery. It concerns reproductive difficulties associated with male-factor causes.
Sexual reproduction: Reproduction involving the combination of genetic material from reproductive cells. Male gametes participate in this broader reproductive process.
Sperm: A motile male reproductive cell that can fertilize an egg in many species. It is the familiar animal example of a small male gamete.

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