Medical Dictionary

undulating membrane

noun un·du·lat·ing membrane \ ˈən-jə-ˌlāt-iŋ-, ˈən-d(y)ə- \

medical Definition of undulating membrane

:a vibratile cytoplasmic membrane:
a :a lateral expansion of the plasma membrane in some flagellates that is usually associated with a flagellum
b :a row of laterally fused long cilia associated in many ciliates with the oral structures

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