実じっ効こう再さい生せい産さん数すうMeaningsNoun1. effective reproduction numberKanji used実real効be effective再one more time生life産give birth数numberComposed of実じっ効こうpractical effect; efficacy; efficiencyNoun再さい生せい産さんreproductionNoun数すうseveral; a few; a number of; number; quantity; amount; counting; calculation; figures; numbers; …Prefix