Definition of abolitionism noun from the Oxford Advanced Learner's Dictionary

 

abolitionism

 noun
noun
BrE
 
; NAmE
 
[uncountable]
 
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the American campaign in the 1800s to free the slaves in the southern states. Its members were called abolitionists, and many hid slaves who were escaping on the Underground Railroad. Famous abolitionists included the poet John Greenleaf Whittier and the author Harriet Beecher Stowe.