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ratiocinate

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ra⋅ti⋅oc⋅i⋅nate

[rash-ee-os-uh-neyt, -oh-suh-, rat-ee-]
–verb (used without object), -nat⋅ed, -nat⋅ing.
to reason; carry on a process of reasoning.

Origin:
1635–45; < L ratiōcinātus ptp. of ratiōcinārī to reckon, calculate, conclude, v. deriv. of ratiō reason


ra⋅ti⋅oc⋅i⋅na⋅tor, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To ratiocinate
ra·ti·oc·i·nate   (rāsh'ē-ŏs'ə-nāt')   
intr.v.   ra·ti·oc·i·nat·ed, ra·ti·oc·i·nat·ing, ra·ti·oc·i·nates
To reason methodically and logically.

[Latin ratiōcinārī, ratiōcināt-, from ratiō, calculation; see ratio.]
ra'ti·oc'i·na'tion n., ra'ti·oc'i·na'tor n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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