直ちょく列れつ加か算さん器きMeaningsNoun1. serial adderKanji used直straight列row加add算calculate器instrumentComposed of直ちょく列れつseries (e.g. electrical); serialNoun加か算さんaddition; adding; supplementNa-adjective器きdevice; instrument; vessel; container; ability; capacity; calibre; caliberNoun