Definition of malacostracan in English:

malacostracan

Syllabification: mal·a·cos·tra·can
Pronunciation: /ˌmaləˈkästrəkən
 
/
Zoology

noun

  • A crustacean of the large class Malacostraca, such as a crab, shrimp, or lobster.
    More example sentences
    • Malacostracans exhibit the hard, calcified exoskeleton typical of crustaceans.
    • Malacostracans play such an important role in aquatic ecosystems that their conservation is an important issue.
    • Shifts between aquatic and terrestrial habitats were likely promoted by the availability of malacostracans in both terrestrial and aquatic habitats.

adjective

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  • Relating to or denoting malacostracans.
    More example sentences
    • In a study of 47 species of malacostracan arthropods, Becker found that most of the taxa were not heavily fouled.
    • Classical eyestalk ablation experiments have demonstrated that malacostracan reproduction is under sinus gland control.
    • Therefore, the homology of entomostracan and malacostracan neuronal stem cells remains uncertain.

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noun
used to address an English nobleman