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单词 hydrozoan
释义

WordReference Random House Unabridged Dictionary of American English © 2024
hy•dro•zo•an  (hī′drə zō′ən),USA pronunciation n. 
  1. Invertebratesany 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. 
  1. Invertebratesbelonging or pertaining to the Hydrozoa.
  • Neo-Latin Hydrozo(a) (see hydro-1, -zoa) + -an
  • 1875–80

Collins Concise English Dictionary © HarperCollins Publishers::
hydrozoan /ˌhaɪdrəʊˈzəʊən/ n
  1. any colonial or solitary coelenterate of the class Hydrozoa, which includes the hydra, Portuguese man-of-war, and the sertularians
 adj
  1. of, relating to, or belonging to the Hydrozoa
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更新时间：2025/7/25 4:18:12