The term "Tomas sign" is spelled using the IPA transcription /toʊməs saɪn/. The first syllable "to" is pronounced with a long "o" sound, followed by a short "u" sound in the second syllable "məs". The final syllable "sain" is pronounced with a long "i" sound. The term refers to a medical diagnostic sign that is used to identify a nerve injury in the lower arm. Proper spelling and pronunciation are important in medical professions to avoid misunderstandings and ensure accurate communication.