Distender is spelled with "dis-" followed by "tender," and the stress falls on the second syllable. The "s" and "t" sounds are pronounced separately, creating a consonant cluster. The phonetic transcription of this word is /dɪsˈtɛndər/. The definition of the word distender is someone or something that causes expansion or enlargement. This word is less commonly used in everyday speech, but it is still important to know its correct spelling and pronunciation.