velamen
noun pl. velamina
- Anat. a membrane or velum
- Bot. the corky outer layer of the aerial roots of certain orchids
See velamen in American Heritage Dictionary 4
(və-lāˈmən)
noun pl. ve·lam·i·na (-lămˈə-nə) - Anatomy A membranous covering or partition; velum.
- Botany The spongy, multiple epidermis that covers the aerial roots of epiphytic orchids and certain other plants and is capable of absorbing atmospheric moisture.
Related Forms:
- velˌa·menˈtous (vĕlˌə-mĕnˈtəs) adjective
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