turbellarian

[tur-buh-lair-ee-uhn]

tur·bel·lar·i·an

[tur-buh-lair-ee-uhn]
adjective
1.
belonging to the Turbellaria, a class of platyhelminths or flatworms, mostly aquatic and having cilia on the body surface.
noun
2.
a turbellarian platyhelminth.

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Turbellarian has a plethora of syllables.
So is pneumonoultramicroscopicsilicovolcanoconiosis. Does it mean:
an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.
(used as a nonsense word by children to express approval or to represent the longest word in English.)

Origin:
1875–80; < Neo-Latin Turbellari(a) (Latin turbell(ae) a stir, row (plural diminutive of turba turmoil) + -āria, neuter plural of -ārius -ary) + -an
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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World English Dictionary
turbellarian (ˌtɜːbɪˈlɛərɪən)
 
n
1.  any typically aquatic free-living flatworm of the class Turbellaria, having a ciliated epidermis and a simple life cycle: includes the planarians
 
adj
2.  of, relating to, or belonging to the class Turbellaria
 
[C19: from New Latin Turbellāria, from Latin turbellae (pl) bustle, from turba brawl, referring to the swirling motion created in the water]

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