Webster 1913 Edition
inflexio: cf. F.
The act of inflecting, or the state of being inflected.
A bend; a fold; a curve; a turn; a twist.
A slide, modulation, or accent of the voice;
as, the rising and the falling.
The variation or change which words undergo to mark case, gender, number, comparison, tense, person, mood, voice, etc.
Any change or modification in the pitch or tone of the voice.
A departure from the monotone, or reciting note, in chanting.
Point of inflection
the point on opposite sides of which a curve bends in contrary ways.
Webster 1828 Edition
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, &c., 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.