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protrusion

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protrusion/proʊˈtruːʒən/noun
pluralprotrusions
protrusion
/proʊˈtruːʒən/
noun
pluralprotrusions
Learner's definition of PROTRUSION  
[count] : a part that sticks out
[count, noncount] : the act of sticking out or the condition of something that sticks out
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