Main Entry: un·du·lat·ing membrane

Pronunciation: \ˈən-jə-ˌlāt-iŋ-, ˈən-d(y)ə-\

Function: noun

: 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