heterocercal

[het-er-uh-sur-kuhl]

het·er·o·cer·cal

[het-er-uh-sur-kuhl]
adjective Ichthyology.
having an unequally divided tail, characteristic of sharks, rays, and skates.


Origin:
1830–40; hetero- + Greek kérk(os) a tail + -al1

het·er·o·cer·cal·i·ty [het-er-oh-ser-kal-i-tee] , noun
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Heterocercal has a plethora of syllables.
So is dichlorodiphenyltrichloroethane. Does it mean:
a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S.
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.
Collins
World English Dictionary
heterocercal (ˌhɛtərəʊˈsɜːkəl)
 
adj
ichthyol Compare homocercal of or possessing a tail in which the vertebral column turns upwards and extends into the upper, usually larger, lobe, as in sharks
 
[C19: from hetero- + Greek kerkos tail]

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