amphioxus

noun

am·phi·ox·us ˌam(p)-fē-ˈäk-səs How to pronounce amphioxus (audio)

plural amphioxi ˌam(p)-fē-ˈäk-ˌsī How to pronounce amphioxus (audio)

or amphioxuses

: any of a genus (Branchiostoma) of lancelets

broadly : lancelet

Example Sentences

Recent Examples on the Web So, the presence of cartilage suggests that, even at this early stage of their evolution, vertebrates probably had a distinct nerve cord that produced a neural crest—something that our close relatives like the amphioxus doesn't have.

John Timmer, Ars Technica, 7 July 2022 If that interpretation is correct, then that would mean yunnanozoans look a lot like an amphioxus, but have a feature that's otherwise found only in modern vertebrates.

John Timmer, Ars Technica, 7 July 2022

Word History

Etymology

borrowed from New Latin, genus name, from Greek amphi- amphi- + oxýs "sharp, keen" — more at oxygen

Note: The genus name Amphioxus was introduced by the English naturalist and bookseller William Yarrell (1784-1856) in A History of British Fishes, vol. 2 (London, 1836), pp. 468-72. The name alludes to the shape of the animal: "both ends pointed," as noted under "generic characters." Yarrell was unaware that the Italian zoologist Gabriele Costa had named the same genus Branchiostoma two years earlier (in Cenni zoologici, ossia descrizione sommaria delle specie nuove di animali, Naples, 1834, p. 49); by rules of taxonomy, the name Branchiostoma hence has priority over Amphioxus.

First Known Use

1837, in the meaning defined above

单词	amphioxus
释义	amphioxus noun am·phi·ox·us ˌam(p)-fē-ˈäk-səs plural amphioxi ˌam(p)-fē-ˈäk-ˌsī or amphioxuses : any of a genus (Branchiostoma) of lancelets broadly : lancelet Example Sentences Recent Examples on the Web So, the presence of cartilage suggests that, even at this early stage of their evolution, vertebrates probably had a distinct nerve cord that produced a neural crest—something that our close relatives like the amphioxus doesn't have. John Timmer, Ars Technica, 7 July 2022 If that interpretation is correct, then that would mean yunnanozoans look a lot like an amphioxus, but have a feature that's otherwise found only in modern vertebrates. John Timmer, Ars Technica, 7 July 2022 Word History Etymology borrowed from New Latin, genus name, from Greek amphi- amphi- + oxýs "sharp, keen" — more at oxygen Note: The genus name Amphioxus was introduced by the English naturalist and bookseller William Yarrell (1784-1856) in A History of British Fishes, vol. 2 (London, 1836), pp. 468-72. The name alludes to the shape of the animal: "both ends pointed," as noted under "generic characters." Yarrell was unaware that the Italian zoologist Gabriele Costa had named the same genus Branchiostoma two years earlier (in Cenni zoologici, ossia descrizione sommaria delle specie nuove di animali, Naples, 1834, p. 49); by rules of taxonomy, the name Branchiostoma hence has priority over Amphioxus. First Known Use 1837, in the meaning defined above Medical Definition amphioxus 1 of 2 noun am·phi·ox·us ˌam(p)-fē-ˈäk-səs plural amphioxi -ˌsī -ˌsē or amphioxuses : a lancelet of the genus Branchiostoma broadly : lancelet Amphioxus 2 of 2 noun taxonomic synonym of branchiostoma
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amphioxus

noun

Example Sentences

Word History

Medical Definition

noun

noun