Abnormalities of the ear and hearing are well recognized in Turner's syndrome (TS), which is one of the most common chromosomal abnormalities. Presented here are the preliminary data from a UK study of the audiological features of 113 women over the age of 16 years with TS. Seventeen per cent had normal hearing. 19% had conductive or mixed loss, and 47% had sensorineural hearing loss associated with the TS. The results are discussed with reference to previously published studies and to the lack of consensus on comparative definitional terms in audiology.