1.any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle.
各种通常是自由游动的海生腔肠动物，其凝胶状水母阶段是其生命周期中的主要阶段。
2.no alternation of generations the medusoid phase being entirely suppressed: sea anemones; corals.
由于没有世代交替，水母阶段遭到完全抑制；海葵；珊瑚虫。
3.Meet Medusoid, a bioengineered artificial jellyfish created by researchers at the California Institute of Technology and Harvard University.
这就是梅多索依德，一个通过生物工程技术制得的人工水母，他由来自加利福利亚理工学院和哈佛大学的研究者亲手打造。