> as lemmas
hydrocœl
hydrocœl n.
Brit. 
/ˈhʌɪdrə(ʊ)siːl/
, /ˈhʌɪdrə(ʊ)siːl/U.S. /ˈhaɪdrəˌsil/
(also 'hydrocoele, hydrocele) [Greek κοιλία cavity of the body] Zoology the water-vascular system of an echinoderm./ˈhaɪdrəˌsil/ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > member of > parts of > water-vascular system
hydrocœl1888
1888 Philos. Trans. 1887 (Royal Soc.) B. 178 266 After separating from the hydrocele the anterior body-cavity grows towards the ectoderm on the right side.
1900 E. R. Lankester Treat. Zool. III. viii. 23 Whatever may be the homologies of the hydrocoel, there is..no nephridial or other excretory system in Echinoderma.
1962 D. Nichols Echinoderms x. 121 This [sac] is called the left axohydrocoel, the anterior part being the axocoel..and the posterior the hydrocoel.
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as lemmas
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