Definition of euphausiid in English:


Line breaks: eu|phau¦siid
Pronunciation: /juːˈfɔːzɪɪd


  • A shrimp-like planktonic marine crustacean of an order which includes krill.
    • Order Euphausiaceae, subclass Malacostraca
    More example sentences
    • Unexpectedly, even juvenile mysids, which are never planktonic, have similar optics to those of larval euphausiids and decapods, and form refracting superposition eyes in adults.
    • Plankton such as euphausiids are important food for pre-grisle but amphipods and decapods are also consumed.
    • Throughout the euphausiids, decapods, and stomatopods, larvae invariably possess compound eyes, which are naturally complicated structures.


late 19th century: from modern Latin Euphausia (genus name from Greek eu 'well' + phainein 'to show' + ousia 'substance') + -id2.

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