一いち年ねん生せい植しょく物ぶついちねんせいしょくぶつMeanings1nounannual plant; annualbotanyBotanical term for a plant that completes its life cycle within one year or growing season.一いち年ねん生せい植しょく物ぶつは、種たねをまいてから一いち年ねん以い内ないに枯かれる。Annual plants die within a year after sowing.