velum

/ˈviːləm/
noun
  1. The soft palate at the back of the roof of the mouth, which helps with swallowing and speech.
    • Speech therapists work on velum movement to improve certain sounds.
    • A cold can cause the velum to swell, making it hard to speak clearly.
    • The velum lifts to close off the nasal passage when you swallow.
  2. A thin, membrane-like structure in some animals or plants, such as the bell of a jellyfish or a protective layer in mosses.
    • The jellyfish's velum helps it move through the water.
    • Biologists studied the velum of the sea creature to understand its swimming mechanics.
    • Under the microscope, the velum of the moss appeared delicate and translucent.
Synonyms