(adjective) having several broods in a season, as in "multivoltine species of mosquito." From multi- + -voltine = having a given number of broods, which is from French, from Italian volta = time, turn (1894).

having many broods and generations in a year or season.

In this case, mosquitoes which are capable of breeding more than once within a normal breeding season.

Reproducing more than once a year, as in insects.

more than two generations per year.

Having several generations per year.