Asteroidea

As·ter·oi·de·a

[as-tuh-roi-dee-uh]
noun
the class comprising the starfishes.

Origin:
< Neo-Latin, equivalent to Aster(ias) a starfish genus (< Greek asterías starry, derivative of astḗr star) + -oidea -oidea

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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WordNet
asteroidea

noun
sea stars 
WordNet® 3.0, © 2006 by Princeton University.
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00:10
Asteroidea is always a great word to know.
So is doohickey. Does it mean:
a gadget; dingus; thingumbob.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
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