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ovum

An egg cell: the female reproductive cell that can join with a sperm to start a pregnancy.

OH-vum noun

What it means

The female sex cell, made in the ovary. Each month, one ovum is usually released at ovulation and travels down a fallopian tube, where it can be fertilized by a sperm. It carries half of the genetic material a baby needs. In a stool test for "ova and parasites," ova means the eggs of parasitic worms.

At a glance

Spanishóvulo
Also writtenova

Related terms

gonad

A sex gland: an ovary or a testis, which makes eggs or sperm and sex hormones.

reproduction

The process by which living things produce offspring.

meiosis

Cell division that makes eggs or sperm, each with half the usual number of chromosomes.

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