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backscatter

American  
[bak-skat-er] / ˈbækˌskæt ər /
Also backscattering

noun

Physics.
  1. the deflection of nuclear particles or of radiation in a scattering process through an angle greater than 90°.


backscatter Scientific  
/ băkskăt′ər /
  1. The deflection of radiation or particles by electromagnetic or nuclear forces through angles greater than 90° to the initial direction of travel.

  2. The radiation or particles so deflected.


Etymology

Origin of backscatter

First recorded in 1955–60; back 2 + scatter

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The researchers also confirmed their conclusions using phase field simulations and electron backscatter diffraction measurements.

From Science Daily Jul. 10, 2026

What I like about this photograph is the imperfection of backscatter, recreating space and making it perfect to me.

From BBC Feb. 10, 2022

“We know there are biological mechanisms by which X-ray exposure can cause cancer...it seemed likely that those backscatter scanners would carry some small risks.”

From Time Aug. 23, 2017

The subsurface contours of new caves may be mapped by ground-penetrating radar or acoustic backscatter.

From Slate Sep. 23, 2013

The TSA "is in the process of removing all the backscatter units from ... airports where they are deployed and will replace most of them with millimeter wave technology," he said.

From Reuters Jan. 18, 2013

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