Corsak is an incorrect spelling of the word 'Corsac', a small fox species native to central Asia. The correct pronunciation of the word 'Corsac' is /kɔːsæk/ in IPA phonetic transcription. The first syllable 'cor' is pronounced with an open-mid back unrounded vowel sound, while the second syllable 'sac' is pronounced with a short 'a' followed by a voiceless velar stop. It is important to use the correct spelling in written communication to avoid confusion and errors.