hydrozoan

/hahy-druh-zoh-uhn/US // ˌhaɪ drəˈzoʊ ən //UK // (ˌhaɪdrəʊˈzəʊən) //

水生动物,水生动物学,水生植物,水生植物学

Definitions

n.名词 noun

1
- : any freshwater or marine coelenterate of the class Hydrozoa, including free-swimming or attached types, as the hydra, in which one developmental stage, either the polyp or medusa, is absent, and colonial types, as the Portuguese man-of-war, in which both medusa and polyp stages are present in a single colony.

adj.形容词 adjective

For one tiny hydrozoan creature from the coast of Italy, avoiding death is something that just, well, happens—over and over and over again.