If you describe something as auditory, it is related to the process of hearing. If someone says "Surrender Dorothy" and you hear "Where's the laundry," you have an auditory problem.
The word auditory is based on the Latin word audire, meaning to hear. If you have an auditory processing disorder, you may have trouble discerning conversation in a noisy room, or hear a ringing sound at all times. Some teachers think there's something wrong with their students' auditory capacity, but actually they're just being ignored.