backscattering

[bak-skat-er]

noun Physics.

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

Also, back·scat·ter·ing.

Origin:
1955–60; back² + scatter

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Backscattering is always a great word to know.

So is flibbertigibbet. Does it mean:

an extraordinary or unusual thing, person, or event; an exceptional example or instance.

a chattering or flighty, light-headed person.

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