What does unfertilized mean?
Unfertilized means not having undergone fertilization. Its most familiar use is for an egg or ovum that has not been fertilized, especially in reproductive biology, embryology, and discussions of assisted reproduction. The word can also describe soil or land that has not received fertilizer, where it refers to the absence of plant nutrients rather than reproductive biology. Because it states that no fertilization has occurred rather than asserting that fertilization is impossible, “unfertilized” is often more exact than “infertile” for a particular egg: an unfertilized egg may later be fertilized in a laboratory, while an infertile organism or person cannot reproduce normally. In everyday use, “infertile” is usually more idiomatic for land, animals, and people. Unfertilized itself is clear, formal, and somewhat technical, but it is readily understood when it modifies egg, ovum, seed, or soil. Its usefulness lies in making the absence of a process explicit without implying permanent incapacity.
adjectiveNot having undergone fertilization, especially of an egg or ovum. It may also describe soil or land that has not received fertilizer.
- Not having undergone fertilization, especially referring to an egg or ovum.
- Not supplied with fertilizer, especially referring to soil or land.
"The unfertilized egg was kept in the laboratory for later use."
"The unfertilized egg remained unchanged until the researchers introduced sperm in the laboratory."
"Unfertilized soil often produces weaker crops than soil improved with compost or other organic matter."
One word covers two different absences: an egg with no sperm and soil with no fertilizer.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unfertilized come from?
Unfertilized was formed in English with the prefix un-, meaning “not,” and the participial ending -ed attached to fertilize. Fertilize entered English in the early 17th century from French fertiliser, based on Latin fertilis, meaning “fertile” or “productive,” ultimately related to ferre, “to bear” or “produce.” The word belongs to the wider Latin-derived family that includes fertile, fertility, fertilization, and fertilizer.
How unfertilized is actually used
Predominantly adjectival and neutral, with a technical flavour in biological writing. It is commonly placed before a noun or used predicatively; “infertile” is more idiomatic in ordinary descriptions of a person's or animal's reproductive capacity.
Easily confused with unfertilized
Infertile describes a lasting lack of reproductive capacity, whereas unfertilized describes the absence of a fertilization event and can describe an egg that might later be fertilized.