Definition of euphausiid in English:

euphausiid

Syllabification: eu·phau·si·id
Pronunciation: /yo͞oˈfôzēid
 
/

noun

Zoology
  • A shrimplike, planktonic marine crustacean of an order that includes krill. Many kinds are luminescent.
    • 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.

Origin

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

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