VELAMEN Meaning of VELAMEN in English [ vɪ'leɪmən ]■ noun ( plural velamina -mɪnə ) Botany an outer layer of empty cells in the aerial roots of epiphytic orchids and aroids.OriginC19: from L., from velare 'to cover'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004