VELUM
- any of various veillike or curtainlike membranous partitions
- swimming organ that is especially well developed in the later larval stages of many marine gastropods
- the soft palate
- thin cloud, large in horizontal area, that is draped over or penetrated by cumuliform clouds
- a thin membranous covering or partition, also VELAMEN [n VELA]
- a membrane or membranous part resembling a veil or curtain as
- a thin membranous covering or partition [n VELA]