| 释义 |
Definition of macruran in English: macruranadjective məˈkrʊərənməˈkro͝orən Zoology Relating to or denoting those decapod crustaceans (such as lobsters and crayfish) which have a relatively long abdomen. 〔动〕虾的；长尾亚目的 Example sentencesExamples - Although groove patterns are less common in phyllocarids than they are in the macruran decapod crustaceans, several genera do exhibit distinctive groove patterns.
- Remy and Avnimelech described a lobster-like macruran decapod, which has subsequently been referred to the Stomatopoda Latreille, 1817, the mantis-shrimps.
- Almost all of the macruran genera display a pattern of occurrence in either fine siliciclastic sediment or carbonate environments.
- The macruran and brachyuran decapods, which are not as dependent on swimming, and therefore are less concerned with body drag, do not engage in general body grooming, with few exceptions.
- The assemblage of decapods, one macruran, one anomuran and two brachyurans, is one that would be anticipated in the offshore, relatively quiet water setting of a delta front.
Derivativesadjective Zoology For example, it has a reptant macrurous condition and, contradicting early hypotheses, the legs of this animal are differentiated, some being chelate, while others are achelate. Example sentencesExamples - Elongated invertebrate animals which effect quick muscular contractions, either as a means of rapid withdrawal and escape like some Annelida and Enteropneusta, or for the purpose of making sudden darts through the water like the macrurous Crustacea and the squids and cuttlefishes, have been shown to possess giant nerve cells and fibres.
OriginMid 19th century (as a noun): from modern Latin Macrura (former suborder name), from Greek makros 'long' + oura 'tail', + -an. Definition of macruran in US English: macruranadjectiveməˈkro͝orən Zoology Relating to or denoting those decapod crustaceans (such as lobsters and crayfish) which have a relatively long abdomen. 〔动〕虾的；长尾亚目的 Example sentencesExamples - Remy and Avnimelech described a lobster-like macruran decapod, which has subsequently been referred to the Stomatopoda Latreille, 1817, the mantis-shrimps.
- The macruran and brachyuran decapods, which are not as dependent on swimming, and therefore are less concerned with body drag, do not engage in general body grooming, with few exceptions.
- Almost all of the macruran genera display a pattern of occurrence in either fine siliciclastic sediment or carbonate environments.
- Although groove patterns are less common in phyllocarids than they are in the macruran decapod crustaceans, several genera do exhibit distinctive groove patterns.
- The assemblage of decapods, one macruran, one anomuran and two brachyurans, is one that would be anticipated in the offshore, relatively quiet water setting of a delta front.
OriginMid 19th century (as a noun): from modern Latin Macrura (former suborder name), from Greek makros ‘long’ + oura ‘tail’, + -an. |