De*flec"tion (?), n. [L. deflexio, fr. deflectere: cf. F. d'eflexion.]
1.
The act of turning aside, or state of being turned aside; a turning from a right line or proper course; a bending, esp. downward; deviation.
The other leads to the same point, through certain deflections.
Lowth.
2. Gunnery
The deviation of a shot or ball from its true course.
3. Opt.
A deviation of the rays of light toward the surface of an opaque body; inflection; diffraction.
4. Engin.
The bending which a beam or girder undergoes from its own weight or by reason of a load.
© Webster 1913.