Acalephae
Origin
From Latin acalēphē ("nettle"), from Ancient Greek ἀκαλήφη (akalēphē, "stinging nettle").
Full definition of acalephae
Noun
acalephae
(plural only)- A group of Coelenterata, including the medusas or jellyfishes, and hydroids, called sea nettles from their sting.