The correct spelling of the word "BETATHAL" is actually "BETA THALASSEMIA". This is a genetic disorder that results in abnormal production of hemoglobin in the body. In IPA phonetic transcription, it is pronounced as /ˈbiːtə/θæləˈsiːmiə/ with stress on the second and fourth syllables. The "b" sound in "beta" is pronounced as [b], the "th" in "thalassemia" is pronounced as [θ], and the "s" is pronounced as [s]. This disorder can cause anemia and other health complications.