Ratiocinate v. i. : To reason, esp. deductively; to offer reason or argument.

Example:


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Defination from the web:
ratiocinate from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Learn more about "ratiocinate" Learn more about "ratiocinate" and related topics at Britannica.com. Pronunciation Symbols. Share this entry: ...