Definition of macruran in US English:



  • Relating to or denoting those decapod crustaceans (such as lobsters and crayfish) which have a relatively long abdomen.

    • ‘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.’
    • ‘Remy and Avnimelech described a lobster-like macruran decapod, which has subsequently been referred to the Stomatopoda Latreille, 1817, the mantis-shrimps.’
    • ‘Although groove patterns are less common in phyllocarids than they are in the macruran decapod crustaceans, several genera do exhibit distinctive groove patterns.’
    • ‘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.’


Mid 19th century (as a noun): from modern Latin Macrura (former suborder name), from Greek makros ‘long’ + oura ‘tail’, + -an.