Definition of ascidian in English:


Pronunciation /əˈsidēən/ /əˈsɪdiən/

See synonyms for ascidian

Translate ascidian into Spanish


  • A sea squirt.

    Phylum Chordata, Subphylum Urochordata, class Ascidiacea

    ‘Above, a seastar fish swims amongst a garden of ascidians and soft corals.’
    • ‘Some organisms, such as nematodes and ascidians, have a remarkably precise pattern of cell divisions in early development.’
    • ‘Boulders are infested with black tree corals, mussels, cowrie shells, soft and hard corals and ascidians.’
    • ‘Cloney has provided a clear description of the types of organs in ascidians.’
    • ‘Aided by currents, the Haven has attracted all the filter-feeding creatures such as crinoids and ascidians, and there are plenty of holes to be occupied.’


Mid 19th century from modern Latin plural Ascidia (genus name), from Greek askidion, diminutive of askos ‘wineskin’.