Univoltin

Part of speech: adjective

Definitions

1. Describing an insect or other organism that completes exactly one breeding generation over the course of a single year
2. Used of a species whose life cycle produces just one brood each calendar year, without repeated reproduction within that span
3. Referring to animals that develop through a single generation annually, a trait common among many moths and beetles

Etymology: "Univoltin" is the dated spelling of "univoltine," an adjective meaning producing one generation per year. It comes from French "univoltin," which is built from "uni-," meaning one, and "-voltine," a suffix tied to "voltine," the term used in entomology for the number of broods an insect produces in a year. The word is a technical coinage rather than an ancient one. Its first element, "uni-," is the Latin prefix for "one," and the second part reflects the French scientific vocabulary of insect life cycles, where "bivoltin" and "multivoltin" describe two and many broods respectively. Silkworm breeders and entomologists needed such precise terms to classify insects by how many generations they completed within a single year.

Antonyms: multivoltine, bivoltine