An egg cell, also known as an OVUM, is a reproductive cell that is produced in the female reproductive system. It is the largest cell in the human body and is typically oval in shape. OVUM is the Latin word for egg and is also used to refer to the egg cell. OVA is another term for egg cells and is derived from the Latin word for egg. Oocytes are immature egg cells that are found in the ovaries of female mammals. Ovules are the female reproductive cells that are found in flowering plants. Ootids are the haploid cells that are formed when an egg cell is fertilized by a sperm cell. Gametes are the reproductive cells that are involved in sexual reproduction. Egg cells, OVA, oocytes, ovules, ootids, and gametes are all terms that are used to describe different types of reproductive cells.