mesozoan
/ˌmesəʊˈzəʊən/noun
1- Zoology a minute worm which is an internal parasite of marine invertebrates. It lacks any internal organs other than reproductive cells, and dissolved nutrients are absorbed directly from the host's tissues.【动】中生动物。
1.1
- Phyla Orthonectida and Rhombozoa; formerly placed together in the phylum Mesozoa, which was thought to be intermediate between protozoans and metazoans.直游虫门和菱形虫门, 以前归为中生动物门, 一般被认为介于原生动物和后生动物之间。
词源
early 20th cent.: from modern Latin Mesozoa （from mesos 'intermediate' + zōion 'animal'） + -AN.