A germ cell of a female is an OVUM, a four-letter word. An OVUM is a reproductive cell that is released from the ovary during ovulation. It is also known as an egg cell or female GAMETE. A GAMETE is a six-letter word and is a reproductive cell that fuses with another reproductive cell during fertilization in organisms that reproduce sexually. The male GAMETE is called a sperm cell. An OOCYTE is also a six-letter word and is the immature form of the OVUM. It is produced in the ovaries and matures during the menstrual cycle.