aud
n. uncountable C2 Proficiency US //ˈɔd// aud
n. a person's power to hear or their sense of hearing. It is a very short, informal way to talk about how well someone can listen.
n. the faculty or sense of hearing. An informal clipping of 'audition' or 'auditory', though significantly less common than its related forms in standard discourse.
He has a very sharp aud for music.
The doctor tested her aud to see if the loud noise had caused any permanent damage.
While the patient's visual processing remained intact, his aud was severely compromised following the accident, making verbal communication nearly impossible without the aid of a specialist.
Usage
Informal and rare; typically found in specific medical or technical shorthand rather than general conversation.