Backscatter

noun, verb

noun, verb ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The deflection of particles or radiation through angles greater than 90 degrees to the original direction of travel. countable, uncountable
  2. 2
    The particles or radiation deflected in this manner. countable, uncountable
  3. 3
    A portion of the energy of electromagnetic radiation such as a laser or radio waves that is scattered back in the direction of the source of radiation by an obscurant. countable, uncountable
  4. 4
    The sending of IP packets to essentially random addresses in response to incoming packets that have a spoofed origin. countable, uncountable
Verb
  1. 1
    To scatter particles or radiation back to the direction from which they originate. ambitransitive
  2. 2
    scatter (radiation) by the atoms of the medium through which it passes wordnet

Etymology

Back-formation from backscattering.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.