1. (v. t.) To make rational; also, to convert to rationalism.

2. (v. t.) To interpret in the manner of a rationalist.

3. (v. t.) To form a rational conception of.

4. (v. t.) To render rational; to free from radical signs or quantities.

5. (v. i.) To use, and rely on, reason in forming a theory, belief, etc., especially in matters of religion: to accord with the principles of rationalism.

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