单词 monactinellid 释义 monactinellid, n. and a.|mnktnld|[ad. mod.L. Monactinellid n. pl. (see below), formed as monactine + -ella dim. suffix + id: see -id.]a. n. A sponge of the sub-order or group Monactinellid, characterized by the presence of uni-axi...