The word "densen" is spelled with the letter "s" instead of the more commonly used "c" because it comes from the German language where "s" is used in this word. In IPA phonetic transcription, "densen" is pronounced as /ˈdɛnsən/. The first syllable is stressed and pronounced as "den" with a short "e" sound, followed by "s" and another short "e" sound, and ending with "n". Despite the unusual spelling, "densen" is a valid English word meaning to make something dense or compact.