(phonetics,uncountable) The inverse process of gemination, when a spoken long consonant is pronounced for an audibly shorter period. (countable) A particular instance of such change.

Pronunciation ˌdiːdʒemɪˈneɪʃn The change from a geminate (long) sound to the equivalent single (short) sound. An example from Finnish: ˈkirkko “church” (nominative), ˈkirkon (genitive). The process al [..]