interferogram

[in-ter-feer-uh-gram]

in·ter·fer·o·gram

[in-ter-feer-uh-gram]
noun Optics.
a photographic record of light interference patterns produced with an interferometer, used for recording shock waves and fluid flow patterns.

Origin:
1920–25; interfere + -o- + -gram1
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Interferogram has a plethora of syllables.
So is sesquipedalianism. Does it mean:
given to using long words.
an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.
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