りんちゅうるいMeanings1nounrotifers; rotatoriausually written using kana alonerare termRare zoological term for the phylum Rotifera. Usually written in kana. The cross-reference 輪虫 (りんちゅう) is a more common synonym.See also: 輪虫輪りん虫ちゅう類るいは微び小しょうな水すい生せい動どう物ぶつの一いち群ぐんである。Rotifers are a group of microscopic aquatic animals.