hi·ber·nac·u·lum (hī'bər-nāk'yə-ləm) n.
pl. hi·ber·nac·u·la (-lə) Biology
A protective case, covering, or structure, such as a plant bud, in which an organism remains dormant for the winter. The shelter of a hibernating animal.
[Latin hībernāculum, winter residence, from hībernāre, to winter, from hībernus, relating to winter; see ghei- in Indo-European roots.] |