What does oviparity mean?
Oviparity names the reproductive method in which an organism produces eggs rather than giving birth to live young. The eggs are laid by the parent, and embryonic development occurs outside the parent's body, with the young later hatching or otherwise emerging from the eggs. This is the characteristic reproductive mode of birds, most reptiles, amphibians, fish, and insects, although there are many exceptions within these groups. The term is especially useful in comparative biology, where it can be contrasted with viviparity, in which young develop inside the parent, and ovoviviparity, in which eggs are retained internally until they hatch. “Egg-laying” is the ordinary English equivalent, while “oviparity” provides a precise scientific label for discussing reproductive strategies across species.
nounOviparity is the method of reproduction in which an organism lays eggs, with the young developing outside the parent's body. It is the characteristic reproductive mode of most insects, fish, reptiles, amphibians, and birds.
- The reproductive process in which an organism lays eggs and the young develop outside the parent's body.
"The species is distinguished by oviparity, laying its eggs in a sheltered nest near the riverbank."
"Oviparity is the most common reproductive strategy among insects."
"The research team compared oviparity with viviparity in several species of fish."
The plural is rare and typically appears in specialized biological writing.
"The researchers compared different forms of oviparities in tropical insects."
Oviparity made life on Earth possible for millions of species: most animals begin life not as a miniature adult, but as an egg.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does oviparity come from?
The word was formed in the early 19th century from the Latin ovum, meaning “egg,” and the Latin suffix -parity, derived from parere, “to bring forth” or “to produce.” Its formation follows the pattern of the Latin-derived adjective oviparous, meaning “egg-laying.” The related English word oviposition refers specifically to the act of laying eggs. The terminology reflects a broader European scientific tradition that distinguished reproduction involving eggs from reproduction involving live birth.
Related word forms
How oviparity is actually used
This is a formal scientific term, chiefly used in biology and zoology. In general writing, “egg-laying” is usually clearer and more accessible.
Easily confused with oviparity
Oviparity involves laying eggs, whereas viviparity involves giving birth to live young that have developed inside the parent.
Ovoviviparity involves retaining eggs inside the body until they hatch, so the young are born alive but receive no placental nourishment.