hydromedusa

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hy·dro·me·du·sa

 (hī′drō-mĭ-do͞o′sə, -dyo͞o′-)
n. pl. hy·dro·me·du·sas or hy·dro·me·du·sae (-sē)
A hydrozoan in the medusoid stage of its life cycle.

hydromedusa

(ˌhaɪdrəʊmɪˈdjuːsə)
n, pl -sas or -sae (-siː)
(Animals) the medusa form of hydrozoan coelenterates
ˌhydromeˈdusan adj

hy•dro•me•du•sa

(ˌhaɪ droʊ mɪˈdu sə, -zə, -ˈdyu-)

n., pl. -sae (-sē).
the medusa form of a hydrozoan.
[1885–90; < New Latin; see hydra, -o-, medusa]
hy`dro•me•du′san, adj.