Which term refers to having better hearing with the left ear?

The term "sinistraural" is derived from Latin, where “sinistra” means left and “aural” relates to the ear. Therefore, "sinistraural" literally describes the ability to have improved hearing in the left ear. This is a specific medical term used in audiology and related fields to denote a unilateral preference for hearing.

The other options do not pertain to hearing or auditory functions. "Semenology" deals with the study of semen and its components, while "schizophrenia" is a mental health condition characterized by disruptions in thought processes, perceptions, emotional responsiveness, and social interactions. "Sarapu" does not relate to hearing and appears to be an unrelated term. This focus on the auditory aspect makes "sinistraural" the correct choice.