Inverse process of gemination, when a spoken long consonant is pronounced for an audibly shorter period(noun)
A particular instance of such change(noun)
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Use "degemination" in a sentence
"English was first written down phonetically and therefore this little slip of the tongue which is called degemination, technically was written this way to reflect the sound."
"BTW, i think that the fact that “cannot” underwent degemination at some point in time is a good clue that english speakers treat it as one word… we usually don’t do things like that across word boundaries."