英语词汇“actinal”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

actinal

/akˈtʌɪnl/ /ˈaktɪnl/

Zoology

adjective

Designating the part or surface of an echinoderm or other radiate animal which contains the mouth and surrounding organs (as the lower or oral side of a starfish); relating to this part.

Originally introduced in connection with Agassiz's theory that the body of a radiate animal is essentially a sphere, with the mouth or actinostome at one of the poles..

Origin

Mid 19th century; earliest use found in Louis Agassiz (1807–1873), zoologist and geologist. From ancient Greek ἀκτῖν-, ἀκτίς ray + -al.

单词	actinal
释义	actinal /akˈtʌɪnl/ /ˈaktɪnl/ Zoology adjective Designating the part or surface of an echinoderm or other radiate animal which contains the mouth and surrounding organs (as the lower or oral side of a starfish); relating to this part. Originally introduced in connection with Agassiz's theory that the body of a radiate animal is essentially a sphere, with the mouth or actinostome at one of the poles.. Origin Mid 19th century; earliest use found in Louis Agassiz (1807–1873), zoologist and geologist. From ancient Greek ἀκτῖν-, ἀκτίς ray + -al.
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