Deflection /(?)/

De·flec·tion

Deflection

n.
  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. The deviation of a shot or ball from its true course. (Gunnery)
  3. A deviation of the rays of light toward the surface of an opaque body; inflection; diffraction. (Opt.)
  4. The bending which a beam or girder undergoes from its own weight or by reason of a load. (Engin.)