Definition of Holothuroidea in English:

Holothuroidea

proper noun

Zoology
  • A class of echinoderms that comprises the sea cucumbers.

    • ‘Ophiuroidea is grouped with Echinoidea and Holothuroidea based on the closed ambicular grooves.’
    • ‘The class Holothuroidea is composed of these creatures and many members of the group (but not all) resemble the garden variety of cucumber.’

Origin

Modern Latin (plural), based on Greek holothourion (see holothurian).

Pronunciation:

Holothuroidea

/ˌhōlō-//ˌhälōTHo͝orˈoidēə/