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subumbrella

[suhb-uhm-brel-uh] /ˌsʌb ʌmˈbrɛl ə/
noun, Zoology
1.
the concave undersurface of a coelenterate medusa, as a jellyfish.
Origin of subumbrella
1875-1880
1875-80; sub- + umbrella
Related forms
subumbrellar, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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