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discursion

noun
dis·​cur·​sion | \də̇ˈskərzhən sometimes -rsh-\
plural -s

Definition of discursion 

1 : discursive reasoning

2 : a turning away from the main subject : roving, roaming, digression each chapter returns there after a discursion into Asia, Africa or America— Gerald Sykes

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History and Etymology for discursion

Middle French (also, act of running about), from Late Latin discursion-, discursio act of running about, motion, course, from Latin discursus (past participle of discurrere to run about) + -ion-, -io -ion

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