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单词 actinula
释义

Definition of actinula in English:

actinula

noun akˈtɪnjʊlə
Zoology
  • In some hydrozoans: a mobile tentaculate larva, which develops from a planula and transforms into an adult polyp or medusa after dispersal.

Origin

Late 19th century; earliest use found in George Allman (1812–1898), naturalist. From ancient Greek ἀκτῖν-, ἀκτίς ray + -ula, after planula.

Definition of actinula in US English:

actinula

nounakˈtɪnjʊlə
Zoology
  • In some hydrozoans: a mobile tentaculate larva, which develops from a planula and transforms into an adult polyp or medusa after dispersal.

Origin

Late 19th century; earliest use found in George Allman (1812–1898), naturalist. From ancient Greek ἀκτῖν-, ἀκτίς ray + -ula, after planula.

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更新时间:2024/12/26 12:24:57