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hydrotheca

[hahy-druh-thee-kuh] /ˌhaɪ drəˈθi kə/
noun, plural hydrothecae
[hahy-druh-thee-kee] /ˌhaɪ drəˈθi ki/ (Show IPA).
Zoology
1.
the part of the perisarc covering a hydranth.
Origin
1870-1875
1870-75; < Neo-Latin; see hydro-1, theca
Related forms
hydrothecal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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