velum

noun ve·lum \ˈvē-ləm\

plural ve·la \-lə\

Definition of VELUM

: a membrane or membranous part resembling a veil or curtain: as

b : an annular membrane projecting inward from the margin of the umbrella in some jellyfishes (as the hydromedusae)

: a swimming organ that is especially well developed in the later larval stages of many marine gastropods

New Latin, from Latin, curtain

First Known Use: 1753

Medical Dictionary

noun ve·lum \ˈvē-ləm\

plural ve·la \-lə\

: a membrane or membranous part resembling a veil or curtain: as a : soft palate b : semilunar cusp

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