zygote

zygote The cell that is formed by the union of a male sex cell (sperm) and a female sex cell (an ovum). The zygote develops into the embryo, as instructed by the genetic material within the unified cell. The unification of a sperm and an ovum is called fertilization. See also ovum; sperm.

zygomycosis

zygomycosis A potentially fatal, dangerous infection that is caused by various fungi from the class Zygomycetes. Zygomycosis is seen most often in patients who are already ill with diseases that suppress the immune system, such as AIDS, burn patients, patients taking corticosteroids, and those with poorly controlled diabetes. If unchecked, the fungal infection can spread…