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Asteroidea

[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. 2012.
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Asteroidea has a plethora of syllables.

So is sesquipedalianism. Does it mean:

(used as a nonsense word by children to express approval or to represent the longest word in English.)

given to using long words.

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WordNet

asteroidea
noun
sea stars

WordNet® 3.0, © 2006 by Princeton University.
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