facultative

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Some require fertilization to produce seeds, while others can also reproduce without fertilization, a process known as facultative agamospermy.

From Science Daily • Dec. 20, 2025

However, there remain many unknowns about parthenogenesis, particularly the form known as facultative parthenogenesis, which is quite rare and only happens in animals that sexually reproduce.

From Salon • Jul. 28, 2023

Animals that exhibit facultative migration can choose to migrate or not.

From Textbooks • Jun. 9, 2022

On the issue of facultative reinsurance, whereby it insures bundles of risk in a job lot, Swiss Re said it expected to finalise a policy for the oil and gas sector in 2023.

From Reuters • Mar. 17, 2022

In Germany, Dr. Mensinga, the gynæcologist, is the most prominent advocate, on medical and hygienic grounds, of what he terms "facultative sterility," which he first put forward about 1889.

From Studies in the Psychology of Sex, Volume 6 Sex in Relation to Society by Ellis, Havelock