To reason is to think things through, to use logic, or to try to solve a problem with logic.(verb)
An example of reason is when you think though a problem logically.
Reason is the cause for something to happen or the power of your brain to think, understand and engage in logical thought.(noun)
See reason in Webster's New World College Dictionary
Origin: ME reisun < OFr < L ratio, a reckoning, reason: see read
See reason in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old French raison
Origin: , from Latin ratiō, ratiōn-
Origin: , from ratus
Origin: , past participle of rērī, to consider, think; see ar- in Indo-European roots.
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