subumbrella

noun
sub·um·brel·la | \ˌsəb-(ˌ)əm-ˈbre-lə \

Definition of subumbrella 

: the concave undersurface of a jellyfish

First Known Use of subumbrella

1844, in the meaning defined above

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Dictionary Entries near subumbrella

subulicorn

Subulura

subumbonal

subumbrella

Subungulata

subunit

suburb

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The first known use of subumbrella was in 1844

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