ex·u·vi·ae (ĭg-zōō'vē-ē') pl.n. The cast-off skins or coverings of various organisms, such as the shells of crabs or the external coverings of the larvae and nymphs of insects.
[Latin, from exuere, to take off; see eu- in Indo-European roots.] ex·u'vi·al (-vē-əl) adj.