Any of various echinoderms of the class Holothuroidea, which includes the sea cucumbers.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "holothurian" in a sentence
"Cool Cuke holothurian A few weeks ago, I took part in an event showcasing the king of WTF foods—the food item that wins the crown for most bemusing common ingredient in the Chinese culinary vocabulary: The humble holothurian, better known as the common sea cucumber."
"An unidentified holothurian is common on the northern reef flats, and an echinoid Heterocentrotus sp. (possibly H. trigonarius) is locally abundant on the sloping marginal reefs and shallow reef flat of the northern beach."
"All right, this creature may not be an alien, but he is a holothurian from the benthic zone."