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INFLEC'TION, noun [Latin inflectio.] The act of bending or turning from a direct line or course.

1. In optics, a property of light by which its rays, when they approach a body, are bent towards it or from it.

2. In grammar, the variation of nouns, etc., by declension, and verbs by conjugation.

3. Modulation of the voice in speaking.

More commonly inflection gives significance to tones.

Point of inflection in geometry, the point where a curve begins to bend the contrary way.